UnclassifiedSECURITY CLASSFICATION CF THIS PAGE("'nert Deto F,.I.d

a difference that can be accounted for by amplification of low velocity vol-canics under Pahute Mesa. Thus local geology must be taken into account inorder to evaluate the attenuation under a given site using amplitude data.This correction shows that with respect to corrected amplitude levels 0B2 Vis equivalent to Pahute Mesa stations. At all NTS sites the higher frequencycontent of P waves is significantly less than in the EUS. Available datasuggests an attenuation effect of about .2 m.u. under NTS. Measurements at afew other Western United States (W4US) sites, including the site of the SHOALexplosion, yield similar figures. These results confirm that body-waves sufferconsiderable anelastic losses traversing the mantle under the WUS, including

the NTS sites.

Unclassified

SECURITY CLASSIrICATION OF THIS PAGcE(Wh, flrn Fn't.,.t I

ABSTRACT

Three Seismic Data Collection System (SDCS) stations were deployed it the

Nevada Test Site (NTS) and two in the Eastern United States (EUS) to measure

magnitude residuals and spectral differences between NTS and EUS stations. The

deployment was intended to determine the degree of anelastic attenuation under

NTS. At the Climax Stock (OB2NV) station, the teleseismic body-wave magnituaes

are .17 magnitude units (m.u.) lower than at the EUS stations. The magnitudes

at the two Pahute Mesa sites are about .2 m.u. higher than at OB2NV, a difference

that can be accounted for by amplification of low velocity volcanics undcr Pahute

Mesa. Thus local geology must be taken into account in order to evaluatre the

attenuation under a given site using amplitude data. This correction shows tiidt

with respect to corrected amplitude levels OB2NV is equivalent to Pahute Aesa

stations. At all NTS sites the higher frequenc content of P waves is signi-

ficantly less than in the EUS. Available data suggests an attenuation effect

of about .2 m.u. under NTS. Measurements at a few other Western United States

(WUS) sites, including the site of the SHOAL explosion, yield similar figures.

These results confirm that body-waves suffer considerable anelastic losses traver-

sing the mantle under the WUS, including the NTS sites.

TABLE OF CONTENTS

Appendix Title

A Amplitudes, periods, and magnitude computations for all Alevents used in the magnitude study.

B Vertical short period waveforms of all events digitized BIfor the computation of At*.

C Power spectra of waveforms in Appendix B. Cl

D Amplitude spectral ratios of waveforms in Appendix B. Dl

E Vertical short period waveforms, power spectra, and Elamplitude spectral ratios for events at SE-MN and SZ-NV.

APPENDIX A

Amplitudes, periods, and magnitude computationsfor all events used in magnitude study

14 5F!P 76 .:46: 5.2 5.C6 EASTEP IS. 26.4S 115.8W I 9.8 0.STA nIST AMP T LC(11) (A/ M') + B LOG0 (A/") + PMR

9I-MF 84.4 74.0 C .83 5., 54Pl-CN 79.E 251.6 .76 5,74 5.62C?2NV 43.6 42.7 .94 5.2? 6.24

2 15 SEP 76 3:15:2C.G 5.84 AUSTRIA 6.24 13. 3E '2.6 C.

LC( lO (A/"T) + p T.OG1( (A/!) *STA DIST AMP T IPN-ME 53.6 70.(1 0.81 5.27 .1RK-CN 64. 4 48.2 C.49 16C92NV 85.1 56 7 I.C9 5. 17 "75.51 OM~ITTED ~* 5!5N12NV 85.1 142.7 1.23 6.0c **sMITTED ,r

3 1' SEP 76 9:21:18.4 5.3C AUSTRTA LL6.3N 13.21F 32.6 C.LCC,1l3(A/NT) + L c-i1C (A/?') FSTA DIST AMP T M ! I5N-ME 53.5 62.8 0.78 5.21

R Ir- cN 6 4. 3 160. 6 A. 54 5. 51 5. 2'SO821jV 85.0 /4(. 1.19 5. 43 5.51NT2NV 85.0 I1'2. 1 C. 91 5.67 5. 3

4 29 SEP 76 3: r: r r.C NOVAYA ZEMLYA 73.5' 5?.7E 3.1 ,

!OGI0(A/MT) + F LOGIr (A/1) +STA DIST AMP T M FmSHN-ME 54.7 192.4 L.85 5.76RK-CN 54.4 158.3 , C.44 5.49OB2NV 69.7 39.1 C.84 5.16 5.GNI-NV 6S.7 46. r .53 5.1r 4.P2NT2NV 69.7 71.B 6.4e 5.28 4..

I ' EP 7F 12:23:31.1 5.27 S.PANAMA '7.2N A2.Lw 121.8 .

ICG12 (-k/47) + F LOrG1l (A /1. + PSTA DIST AMP T MR )-ME U'.9 95.2 1.71 5.11 4.6K-CR .44.7 7 1.01 5.77 5.77CB2NV 43. 18 145 5.73 5.89NT-NV /43.( 477:3 1.m3 5, .891NT2NV 43.0 449.2 0.96 5.84 5.82

6 19 SEP 76 20:57:8.1 5.41 mrXICc 17.9N 1Ar.6W 141.4 r.

ILOGiC(A/Mlrl + e O~ (A/M) BSTA DIST AMP T MR M(HN-ME 39.C 80.2 P.78 M4.9' 4.86RK-CN 33.4 39,L'

.61 4.83 4.61OB2NV 23.8 320.4 f'.86 5.45 5.38N'-mv 23.8 388 5.U4NT2NV 23.8 308.:4 973 5. 5.2

7 2 SEP 76 10:20:17.6 5.12 -L SALVADOR 13.22N 89.qw 12A.6 .

STA DIST AP T LOGI0(AI M) + B LOGIC (A/N) + pST IT M B MBHN-ME 37. 8 124.-5 44 5.5Pi-ON 37.8 33. 362 5.46O2NY 33.5 62.2 1.,4 5.22 5.24NT-NV 33.8 157.3 C.84 5.54 5.47

8 6 SEP 76 9:56:23.2 4.97 N.ATLANTIC c .1N 32.1W 39.3 0.LOG1)(A/MT) B LOGIP (A /M)STA DIST AMP AMB *M

HN-ME 24.6 138.5 r.1I 5.-BIK-CN 352 5.14 C.75 5. 4. 4;70B2NV 46. S 7.9 1. (.6 4.@C 4.82

A-I

- -- ~--- -. -. - .- - = - . -- -- - ---.- --- - -- - --

9 5 SLP 76 2C:11:27.0 5.04 MEXICO 18.58 m .l 140.6 .

STI DIST AMP LCG10(A/MT) + 8 LOGI'(A/N) *HN-N 38.8 49.5 .J.82 4.82BPI-C 45.3 .88 4 ,91 '1.e8Oe2BU 3 80. 06 .89 4.87

in 5 SEP 76 2C:11:43.6 5.17 MEXICC 1P.7N 1C^.7v 139.5 0.STA DIST lOrq(j/MT) + B LOG1O(A/M) + pHN-ME 38.5 106.8 C.96 5.1"7 5.1M

PK-Ow 3J.7 67 1r 5.1F-o2? 2 .0 iC 2 1(3.

11 9 SEP 76 9:27:46.C 5.r5 SVALBARC 77.6 N 8.E 11.8 C.STA DIST AMP LOGIO (A/mT) + + LOGIC (A/N)

RN-ME 42.2 153.' 1.13 S.44 M.5K-ON 2518:52 4.42 4.15OB2NV 6 .G 35.1 4.92 U.77

12 29 SEP 76 9:52:33.C 5.08 CUbA 10.3 8n.*6 l'QA (.

ST S"LOGO(/T) * /) + pRK-CN 33.1 135.3 0.7C 5.

52OB2V1 35.6 120.1 P.6 5.36. 25NT-NV 35.9 171. 1 5.38 5.16NT2NV 35.P 237.1 0.86 5.64 E

13 25 SEP 76 21:47:2t.6 5.13 FASTEP IS. 26.41S 115.,%w 17Q.0STA P1sT AMP LCGIO(A/MT) + p LOGI^(A/A) +

RK-CN 79.5 147.2 C.85 5.56 .4CB2NV 63.6 32.6 1.28 5,36 ."NT-NV 63.6 19.8 1.5 5.23 8:.NT2NV 63.6 f9.3 C.94 5.48

14 26 SEP 76 6:35:49.3 4.!5 KAMC.Tl(A 51.1N 157.2F 313.6 C.STOGIC M/T) + n 10018 (A/p) +

1 17.7 e..3 4 76OB2NV 60y. 8.8 €.80 4. 36 4, 26NT2NV 6 . 2.3 0.56 ,7 4,51

15 26 SEP 76 7:13:36.1 4.63 A.GFNTINA 29.1S F4.6w 135.6 '.

STA DIST AMP T LOGIO (ANP) LOG1A 0/P) +BK-CN a.C 46.1 0.70 5,23 5.08082NV 81.2 29.4 8.67 4.84 4.67NT-KY 81.4 15.0 C .67 4.57 4.48NT2NV 81.4 63.6 6.61 5.18 4.96

16 3C SEP 76 8: 4:10C.9 5.21 CHILE-AEG ?ORDER 24.2S 68.21 135.7 (.L100(A/_T) + 8 LOG1O(A/M) + BSTA DI ST AMP T tieNHN-M 7.3 43.4Q 1.32 OR BRK-M 78. 3 " 1., 5.35 5.46- 5.88 50328? 76.1 .9 . 5.97WT-Uv 76.4 583 6 6.19NT2N1 76.3 M51 NU 6.17 6.C8

17 25 SEP 76 lu:40:47.0 4.52 ZAST2P IS. 24.6S 116.8w 17A.5 I,

STA LOG1 (A/MT) , 8 LOGV (A/M) + B(4.3f 5 O3 599 N082w? 62 10 5 67 415.6NT2. 6 24:1 , 5.1T3 Z~.0 N4 4.64

A-2

-A-- --- ~---- ~ --

26 8 OCT 76 14:38:27.9 8.78 KUFlLES 9. 9N 159.7E 312.7 r.LCG1'

n (A/MT) + LOGIO (A/M) + B

STA DIST AMP T MHN-ME 76.8 844£4 ~7f 5.19 ME 4 83RK-CN 63.3 23.3 8. 8.83 8.61OB2NV 61.4 8.7 .4. 58 4.49NT2NV 61.2 26.2 (.60 1.87 4.65

27 23 NOV 76 5: 3: C.C 5.28 i. KAZAMH .ON 7Q.0E 35(. 4 .

I4GIO(A/m-) + F LOG r,(AIM) + BSTA tIST AMP T M? Mp

HN-M' 79.9 21.u r8 .PC 5. 76 5. 6EPF-CN 79.2 44e.5 C.5C 5.92 5.62NT-NV 91.9 109.F r .7V 1.71 - cMTTT''r ** 5.56NT2NV 91.0 78. (.gq 5.6r ** OMITTE! ** 5.61

28 9 CCT 76 12:31: 6.6 4..7 COSTA PICA 16..N 85.W 126.2 '.

lci 0 (A/I T- E LtC'lt; (A/*) 4 BSTA DiST AMP MF MSHN-ME 3E.5 71.f 1.(t

e 5.r.1 .1

PK-CN 4C.6 4C .8. 84. 69 ".59CB2NV 37.9 1'6.7 1 .20 5. 36 5.44NT-NV 38.2 42L. 8 1.2n 5. 0 6.C2NT2NV 36.1 230.3 1.10 ,6" 5 .68

29 9 OC' 76 2:52:24.3 4.L7 KTFILFS 85. N 15?.5 3C8e. 0.10G10 (A/Mf) + 8 L(Th18 (A/I) * 5

STA D!ST AMP ( M- M

HN-ME R1.7 9. 1.7C 4.47 8.28p-ON 67.9 231 8.7( .93 .8OB2NV 68.9 37. 2 .9A 5. 23 5. 19NT2NV 64.7 C2.'

. C.70 5.29 -. 13

3C 9 OCT 76 16: 2:26. Q

4.584 N.COLtVMFIA 9. 8N 77.5w 118.5 .

t0G1 (A/MT) + E LOGI (A/M) + BSTA DIST pMP T MB MB

HN-ME 37.7 35.P C.7 C 4.69 U.51PK-CN 43.6 31.P C.7( 4.57 U.42CB2NV 44.5 9.6 E .2r 4. 10NT-NV 44.8 73.0 (:f- 5.A5 8.83NT2NV 44.7 25.1 C.71 f.61 8.85

31 9 OCT 76 19:41:27.1 .31 S. PERU 15.2S 71.6W 132.6 C.

tCG1, (A/MT) + P LOG

'I (A/IM) B

STA 8IST AMP T MB MBRK-CN 68. 8 21. p !t, 4. 83 4. 53OB2NV 67.,C 18.2 6C .79 4.57

32 9 OCT 76 21:16:24.1 4.53 PEPU COAST 1'.3S 79.54 136.5 C.

IOG11 (A/!IT) + E LOr10 (A/M) + BSTA 8IST AMP T 7 MBFK-CN 62.3 28.7 C. 3c 8.88OB2NV 58.E 6.7 C.'e 8.2C 4.(8

33 9 OCT 76 23:48: 9.0 8.39 C. AME.-COAST lo.rN 91.0w 133.6 '.

LCGIO(A/MT) + ? LOGIO (A/M) * BSTA DIST AMP T Mp MB-C 4C. 9 15.7 .7 .26 4.

CB2NV 3 4 7.0 .8 .12 4.NT2NV 35.6 18.6 .9 4.8 4.22

A-4

..- -.--

34 1C CCT 76 2:58:F6.6 (4.91 KUFILES 45.4N 151.n 2it'." .

LOGI)(A/MT) + B LOG1 (A/F) *MB MB

STA OIST AMP T M 5.31HNME 5 7 1 5.2 5

RF-ON 375 1CB2N? 66.3 14:4 4:0 .86 0

NT2NV 66.1 18.6 M 4.76 4.46

35 10 OCT 76 6:19:2C.8 4.46 ECUAtC3 0.4S 78.2W 128.C 0.

.CGI.(./MT) E B LOGIC(A/M) * B

STA tIST AMP T M 470

RK-CN 52.9 38.1 r .7 4.854.CB2NV c1.4 5.4 1.1 4.2C 4.25

NT2NV S1.5 19.4 C.6C 4.52 o.3C

36 10 OCT 76 14:32: 4.9 4.59 KUPILES U3.24 14'7.7E 3r9.3 45.

1ICCl I(A/MT) + LOGit

(A/M) + B

STA DIST AMP ' MB4.24BK-ON 71. 19.2 0.5c 454 .4.U7OB2NV 60.4 11.4 C.90 4.52 4.19NT2NV 6§. 3 15.6 0.50 4.4P (.19

17 6 oCT 76 1:12:36.0 E.8V ?CUADCR C.6S 78.79 12P.7 6.

LCG1 (A/MT) + P LOG16 (A/M) + B

5TA DIST AMP T MB MB

v-M- 47.7 212.2 2.C 1 6,28

BK-CN 53.C 111.2 1.3r' 5.71 .3

N72NV 51.4 229.1 1.26 5.89 -07

38 12 OCT 76 4:24:52.1 4.96 S. HONSU, JAPAN 31.2N 141.-5E 32.1 l"

tOG10(A/MT) + B LOGIC (A/) + P

STA DIST AMP T ME B

PF-CN 84.6 17.F r.6 4.78 4.94O24V 9(.4 38.2 0.90 4.98 5.b"

NT-N V er 1 U2:1 1 4Q 5.294T2NV A02 87.5 C.g6 5.32 c.28

1 : OCT 76 23:49:24.3 4.41 W CST CCLUMEIA 2.FN 77.5W 124.6 1.

IOGI'(A/MT) + F LOGlC. (A/M) + '

MB-A DIST AMP T (B2 4.2

"N-ME 44.1 17 , .4 -U2BK-CN 4q.9 64. • 5.5 4.23CB2NV 49.3 11. 4..3?

4t 13 OCT 7E 17:35:45.1 4 68 VENEZUELA 10.5N 62.2W lr4.4 ".

IOG1 3(A/MT) P B LOGln (A/M) + BME

STA rIST AMP T MB 4.98BK-CN 47.8 58.6 r,.6" 5.2( 4.9O)12NV . 15.2 1%. BC 4. .5(l

41 21 OCT 76 4:24:16.0 4.62 N. CHILE 22.15 '.bU 13.8 .

LCGI')(A/MT) + P LOGIO (A/M) + BMB

ST A rIST AMP T MB 4.81HN-ME 68.2 21.c O.70 4.96 4.73R K .- C N 7 5. 8 3 6 .2 C75, t 3oOB2 wV 7 3 .! 29 . : c2 3 5.1 fNT-.NV 73.9 te. 26.I

NT2NV 73.f 39 .9 1.0 5.14

42 21 OCT 76 15:13:22.8 4.92 ALEUTIANS 52.34 169.-3 3n9.9 53.

OG13(h/,T) + B LOGIC (A/1) + BORB M4.B

STA DIST AMP T 2 .RK-CN 44.8 16.. 4 '90822 39.6 62. * 7

NT2NV 30.5 69. 1.0. 5.7

A-5

43 22 CCT 76 4: 4:22.6 4.64 CST OF NiCARAGUA 12.1N 87.6WV 126.9 7n.

LOGlO (A/MT) * 2 LOGlW (A/M) * PSTA DTST AMP T !B 0

3-M3.2 3.9 4.83 4!;9RK-cN 39.1 7.7 . 4.99 4.76C824V 35.8 18. 0.V ~ 4.46 4.24NT- N V N 6. 7r 4.!3N 36. U 499 4.94 4.7e

44 22 OCT 76 5:r3:5C.c 4.57 !L SAIVADCP 13.24 88.2W 126.4 79.

!C*, (A/14) + P LCG'l (A/M) * B5TA 835T AMP T W? MP

f.1 -CN 37.9 54.- 70.71 i. 9 4.81CB2NV 34.6 13.1 '.80 4.4C 4.31NT-NV 34.8 43. q 7A 4.39 '.73NT2NV 34.7 44.3 5 4. 82 4.c1

45 22 tCT 7F 18:35:23.9 .26 KGD!AF Isl cE. N 153.33W 319.4 '.

ICG 1 (k/!T) * !-OGI (A/1 *1STA D:ST AM- I a me

FK-CN 34..8 118.7 (.50' 5.27 4.97OB2NV ,1.2 8, 1 1. 3C 5.5

t 5. f 1NT2NV 31.(% 1q2.3 1,2C 5.82 .9C

4r 2U OCT '6 17:19:55.5 4.6r CIN. ALASKA 3.,N 19.w 322.8 7c.

tOGIo (A/MW) B CGIr (A/) + BS'A DIST AMP I ML

qN-ME 46.4 33. c.8O. 4.87 a,'7CB2N9V 32.4 3r.s u.80 4.69 "._9

.47 26 OCT 7( :59:56.4 5.34 KUPILE :S 46.1N 15. .9F 31r.7 13r.

LCGI(A/",T) + E LOG- (A /M) + PSTA riST AMP T M? MB

pN-M- 81.f 89.6 -1. ( 5.11 4.L,PK-CN 58. 1"5. 3 " 8' 5. 21 5.11O 2 4V C6.1 27.6 50 4.57 4. 27WT-NV 65.8 270.1 C. 6e 5.68 5.384724V 65.9 285.C r.60 5.76 5.53

48 28 OCT '76 9:59:21.3 44,o5 P!pU 14.6S 73.7w 134.p 0.

LOG13(A/MT) P B LOI'W(A/M) + eSTA DIST AMP T MB MB

Pl'-CN 67.E 26.7 C.7r 5.0% 4.84OB2NV 6C.4 9.7 0.7

t 4.56 4.V40

49 2 NOV 76 19:23: 2.7 4.91) KURILE 15 47. r, 151.OE 311.5 0.

IOG1O (A/mT) * B LOGIC W141M 4 BSTA D1ST AMP T MB MB

HN-ME 80.8 126.4 0.7p 5.52 5.37CIB24V 78.2 22.5 C:.9' '4.99 '4.8'5NT2NV 78.1 25.9 C.8C 4.92 4.82

50 12 NOV 76 14:47:32.7 5.39 BAFFIN BAY 72. N 7c. tw 19.5 89.

LOGI1 (A/MT) + B LOGIC (A/P) + BSTA DIST AMP T MB MB

H.-ME 26.1 171 7 10 5.r3NT-NV 541.8 1 1. 5.NT2NV 41.8 138.1 r.60 5.26 54

51 15 NOV 76 14:14:26.6 4.6( KCPILES 45.ON 148.0,E 310.8 2C" .

LCGIr (.A/MT!) p LOGI" (AiM) PST% DIST AMP T FfBW- ME A4.7n 4.

NTWYv 6C. 35 e6 4. ! 4 435

A-b

52 17 NOV 76 5:33:35.5 5.50 KUILTES 51. N 156. c! 311.9 1co.

LOGI) (A/MT) + B LOGI (A/1) + P

STA DIST AP M 5 CHN-M! 75.6 4089 o7 5.85NT2NV 60.5 424.2 1..7

6 6.n5 5.89

53 22 NOV 76 2C: 0: 2.7 4.5C VENEZUELA 7.0N 72. CW 115.6 '.

LOG10(MT) + S LOG1O (A/I') + BSTA DIST AMP T MB MP

RC 12t.5 .47 5 517NT-NV 55 35.2 4 4.84 4.44

54 26 NOV 76 23:U3:12.6 4.80 PERU-ECUArOR 8DR 2.CS 77.0W 128.1 '.

LOG1I (/MT) + P (AP) + P

STA DIST AMP T 1B M?

P9-CN 55.2 8C. 5.2.9

NT-NV 54. 1 269os C6c 5.76 .NT2NV 54.0 175.3 C.Be 5.66 5'

55 1 rEC 76 14:15:33.2 5.rc COSTA RICA 10.CN 65.'w 125.9 r.

LCG1C (A/MT) + P LCG1', (A/?) + PSTA DIST AMP T B F4

BN-ME 39.( 213.1 1.30 5.5 5.6s

BK-CN 41.6 83.7 1.10 5. r.24

NT2NV 39.5 320.E 1. C 5.61 5. fI

56 1 DEC 76 17:44:33.8 4.5C CST OF CENT. AMER. 12.rN 90.1V w 3 .1 r.

LOGI0 (A/FT) + B LOr1', (A/P') +

DTA DIST AMP 4.1RK-CN 38.7 46.5 .7.2

NT2NV 34.4 129.7 S6 5.34

57 . DEC 76 5:27:34.4 4.911 CHIIE-SCLIV:A 2i.iS 69..W 134.3 70.

LOGIOW(/MT) + B LOGf(A/) * F

STA DIST AM? T p V ?

RK-CN 7U.7 145.2 f.7, A 57NT2NV 73.1 216.5 1.C0 5*7V(

58 3 DEC 76 23:10:23.1 4.64' N. CHILE 22.nS 69.'W 13U.9 .

LCG12(A/MT) * LOG1 (AI.P) + P

STA DIST AMP T MB M

PK-ON 76.5 80 8154253NT2NV 73.1 E'%1 I ' '.

59 3C NOV 7f C:40:57.0 6.30 CHILE-BOLIVIA 21.CS 60.fW 134.3 6'.

LOGIO (A/MT) * P LOGI- (A/) + P

STA DIST AMP T PH U MP

H-ME 66.6 11;c2.7 C.f 6 Er.8I-N 74.5 4 1.4 0.6. 6_08

NT2NV 72.9 184. 5 1.00 '.6 6.67

6) 4 DEC 76 5: 6:29.7 4.7n N. CHILE 21.trS 69. oW 134.3 0.

LOGIt)(A/MT) + V LOG' (A/MMR,STA DIST AMP T 546 '. 77RK-CN 74.8 58.5 f.51 51 542

NT-NV 7 152 7 5.53 5.3T2NV ': 175.2 :8 5.30 5.

61 4 DEC 76 12:32:35.4 5.20 N. CHILF 2c.lS 69.nu 133.7 113.

LOG10(A/MT) + P LOGlC (A/M) 4 B

STA DIST AMP T me 513HN-4E 66.6 80.7 13 ~ ;:4 841K-CN 74.5 94.1 0.69 5..,

NT-WV 72.9 454.2 p 5.78 7NT2NV 72. 333.4

A-7

62 5 rPC 76 22: :2 2. 1 4.84 BONIN IS 23-('N 141). PF 296. 4 303.STrA DIST A P TLCGlI(A/MVp) 4p c1OAw *8PN 878 182:4 . 6t!!)iN:2NV 831 296. .7c 54P

5.30T2

63 6 DEC *76 19:46: 2.4 44.90 PASTER Is. 34. 0S 112.eW 1,76.DT nS AM? T Lol.(A/MTr) *BL~t(,~P-N 86.9 62.f 1.O 5.49 MP +N7~ pPN'r2v 71.8 4 6.8 90~' 5.2 49 MB

64 7 CEc 76 9:36:41.4 U..7Atsi 3. 3ir

SA DIST AMP 'PI-N 43 25.1 C.8q2 w*r).4N';2NV q1.5 387.4 '. 8n ~ 5.75 4. 4

65 9 DEC 76 4:24: f.4 U. 3( SAIV~rrF 14. n 1 91. r v 127.8 r .S T tKl A PN L C G l1) ( A / m -) 4 L O i t A ) * BKCN 37.2 271.3 1

LOGC5/r S. FN'~V 33. 3 293.i C. 7C 'I2F.5

ETA 9 DEC 76 9:58 :197 4. C FF CF7 C?EGON 45 G' 121. o4 311. 5 ~DT IST AMP lCG1') (A,7 # B 21 (/

HN-NE 42.6 1497 Lr.'Cl 5.34l 5. FP-N 25.1 2z4 3 C. PC L. lip.1NT2NV 12,7 rI .9 C.P, ~ C 232.3

67 9T DEC 76 15:37:U .C 4.C ce fU LS4-- 148p 3'9.C;E I ,9 8.DIS AMP T OG11' (A/!--') + p L~~3N

PKC 7c l :C 5.13 .HTN 6 - 81.4 C.5s 4.

68 2( CCI 76 8: 0: (,.c NlOVAiYA ZPMzjA 73. ON r5.5E 28 'STA. DIST AMlP Il (AB- + N-EP .fN-ME 54.6 59 -r1 AMRK-CN 54.4 25 P.7t02v 69.7 6. 6 'S.2

SNT-NV 69. 8 .4 .947NT NV 697 11. '. 4. 45 La.

F9 19 fCC 76 14:37:3C.( flC KURILES

45.l 154.-E 3"8.5 .S511 J A p TP I O 0( /n B )pI0Cl 69A41 8 7 MB tOG1'r(A/14.) + BNT2NV 64.4S 681 6 5.1925 F5.36 5.14

S A DIS T A M P T PC GM o m /?i s.NNB~f 96 6: LOG1E( (A/M)+

Plc-ON 446:r 2 14'2 1 5 47~ 6.ABNT-y N 8 2 . 7 9 (5 i 5.71

A-8

30 A131.0!1 0.0 0

71 15 tz; 76 12 :26: 4.C0 ,t. JAPAN : ; ;': LOG Q(j /j ) E

NT-NV 87.,9 32.3

T2 V 2 03C 6 2 : . Q R . C O L MB I A S5 . N 1 2 4 .0 w 3 5 . 6 0

LoG,10 f A/'A) E 6.6

35.6 116 6.505

HN7M xSKI i 6U 9B 1-2 6

18.6 T 8 11)5.83 ?

le2N 6 94.8 1.10 49Q .3

18.5 123: 1.80 .126

%E N V 18 6.1.1N12.0

73 20 t yIC 7 E 2 :22 :25 C BtE . COL U M B8IA 56.r'N 124 0 (A /!,) E

LOG1'n(A/rT) B MEMB

5.Ir

AMP!36 5.1 I!E21

1 395.4 .9 3.

0821V 19. %..79

NT-NV 39~ 21'12 5.27 5.25

19 '42. 1.4c .1

7 22 DC 7 1: 1:42.C .0 VOLCANO S 2. N 142.0 U zE.1 0

SEA DIS 6.36 OITTf 6 '

ST 'S A446 ,1 OMITTED 6.39

K-N 91. f

OB2WV 9c. 377.5 1:-1' 6.167NT-NV 85.2 5A110

NT vV 85. 377.532041 5 1

15 13 rC 6 23: 1:28.C0 * N P0YC 20 L145 ' (/ ' 3 ~

DIS.2P .25

SK-O 82.4 E3 7 GO i 6g 44e

NT2wV 77.3 ?j~e:3 5.48

76 14 tC 76 16: 6:56.C cl~ JAPAN Lor,1N f3. k/ C .3 0

ME OM T E 0 r

S T A D IS ** 7 9E

. 6

?W!2N 8. 4123.8 1.6 671 N~D

11T B -: e 2 3 .S 1 54 2 .0 1 4 5 . f' 3 0 9 .3

7 27 D20 C 6 18:i 8: 8.C 0.(% JAPAN LO W1O(A/ ) +

STAC 74UZ 34.4 4 NE4

sCvy5. ( ) 79. "E 35 .4 0

8 3r rC 76 3:57: 0.0 O.C 1. KAIAKR B

L0o;10 (A 4 M) 4 1

A-9

79 31 DEC 76 9:16:37.0 Q.. JAPAN L 5.CE 307.6sTA rIST AMP

lOGPo 2 , pHNyMZ 88. LOGIC' (A/ I

RK-c. 75: 45.9 '37, 5( 44 C082NV 72.9 25. 0 5: U, M30E 5. 44T -N , 7 J : 6 1 7 . .. 6 6 . 4 9NT2NV 7 7 27.1 5 4.9S .t

4 "580 1 JAN 77 11:33:42.4 5.13 JAPAN 3".(N 137.2E 3t3.9 481.STA DIST AMP

I OG a/P/ 'rj + p *B

RK-CN 8 .6 139. c.8c r.B TOG1O (A/!)+OB2Nv 83.4 44:. a8 5.28 M?

NT-mV 83.2 127.9 P80 4.6U 9M.TTED iNT2Nv 83. 3 199 c ".7c 5. 238 ; 5 45.23 4, 985. C 781 7 lC 76 4:57: C.C 0. E. KAZAKH

50.tv 79.trF 35t. C.ST&A 01 7 APCG',1 A/M) + 2 O l Ap

DIST AMP IGII/THN-ME 79.9 767 mLP•-CN 70 2 8. . 25.2NT-N 91.9 IcNT2NV 91.9 116,6 US, 5.72 ** OMITTED ** 56OMITE** ;."! 28? 5 JAN 77 10:37:33.6 4.76 VOLCANO 15 25.7m 142.5F 297.1 2.

STA DIST LCGI)fA/M7)

9

c2.

2-CNV 86.5 31.4 C.80 4p .B " CG1 {/M) + pQa2Nv 82.3 5.9 .0 4.8 £41T3

9PNT-Ny 82. 12.5 4 1? 4T29

4.78NT2Nv 8;. 22. 3 4 29 4.1

83 5 JAN 77 22:4£4:57-. 5.5A VCLCNO IS. 23.3N 143.8E 294..ST S T AP TLOG1.) WI/T) +RK-CR 90. 157, 9A/;

) LOGIC1 (A/P) * 2B2AV 84.6 135. - .j 792 MP,

NT-Nv 84.3 181.7 f.ge ,MITTED ;NT2NV 84.4 263.4 (. .5692.

6:0196.04,84 6 JAN 77 7:55:55.5 5.24 KUPI12S

49.3N 155.4E 312.3 n.STR 9IST .

LOG1O(A/mT) + 2W,, ,, ME GV(/ +.8

P6 MPE5.6 5, 3 242

532OB2Nv 61.5 4, .3 1.2 5.46

5.54NT-Nv 61. 4 5 .

5.25 5.15

5. 33 5.2i

85 6 JAN 77 16: 2: 3.6 5.?6 AND9 ANCF IS. 51.38 175.4j 308.6 eST 0S A P T LOG O f(A/M-. ) + B ' 3N 175. " 12f-CN 9.7 212.6 e. t B LOGIC (W/N) . B

0-2 V 44.5 26.1 5.57 .6NT-Nv 4. 6 5. 4 4. . 25NTN, ,,.: 27.8 4.7 4'.54. 57 4:;?'

4.4286 22 SEP 76 0:16: 9.3 6.4-5 RUPIL Is. 4-BN 149.1E 31-.2 ==STA .S 'o j j 4 T + L _N - P MZ O G O A p T 2 L O G 1I ( A / m ) + FRK-ONl31OB2NV 189p.2 1. 6.3t, 01.1.

p.836;2NV . 6.78 F184NT-mv 6~: %8

.'l 6J71T 67.5 036.5 .."0

6 2:.39 6,2

A-10

4

87 17 JAN 77 6:23:42.6 5.32 BONIN Is. 26.7m 142.6E 297.9 76.STA DJST 4 LOG10(A4NT) * B LOG1O(A/M) + B-o 5 ! 1.1 5.31 OITTED K.BoB2,v 81.6 4:2 1: 5.11 5.15T2*v . 9 '1. :5.31

8 17 JAN 77 9:42:22.5 4.68 S. OF ALASKA 53.6N 158.7v 313.3 C.LOGIfO(A/W) * B LOGIC (A/K) * 8STA DIST Aff

PK-CN 36.1 4t9. .6 4.11 .p9OB2NV 31.6 9.9 .8 4.79 U.70NT-N? 31.4 9.6 8 .96

NT2NV 31.5 33.6 f 7.64

89 24 JAN 77 6:11:30.0 4.86 KURILE IS 45.5N 150.9r 31#,.1 84.LOGIO(A/MT) + B LOG10 (A/) * BS'VL DIST AiP, IT lipHN-M! 79.8 4fl 1 4 4 9K- CN 66.4 6 .1 v.70 5.14 4.99oB92N 64.5 15.9 r.9e 4.61 4.56NT-WV 64.3 13.4 0.68 4.41 4.18NT2N, 64.4 22.6 0.70 4.67 4.!2

90 3 FES 77 21:30:59.0 O..r RUSSIA-CHINA BDR 43.N 13.QE 317.2 (.

STA DIST AMP LGI0(A/NT) + P LOGI1, (A/N) + B57 DST A7 T me NHN-NM 89. 8 5.12 OMITTED c 512PK-CN 78.7 293. 4, 5.79 5.39CBNV 79.8 52 :5 4.93 4.63NT2 NV 79.7 261.0 .. 50 5.64 5.34

91 6 FEB 77 C:31:29.C 0.41 N. ATLANTIC 24.'1N 48.0v 82.C C.STA DIST LOGI(A/NT) B 5 LOG!' (A/M) + F

RK-ON 44.1 4.3 42 496OB N 58U 143.4 10 14 5.14NT2NY 59 01.3 0.80 ;.42 5.33

92 13 TEB 77 5:51:11.C 0.0 KAMCHATKA 52.-N 160.')E 313.8 0.STAOG (A/NT) B LOGI ^

(A/M) + BMBHN-ME 53.5 *. 6 4.RKON e9.9 59 5.2

5.69

93 16 F2t 77 0:5t):18.. 0.(1 N ATLANTIC OCEAN 32.0N 25).0W 33.1 0.

95 17 F?! 77 13:32: 7.0 C.C KONMDOBSKY IS. 56.V"N 166.A! 317.1 C.

LOG1O(A/MT) + B LOG1O%(A/10.) + 9STA I S MAP T; flu

,N-C 3 91. 4.4 8.

A-If

RK 9 ~ 5: -t 5

---.--.- F------ _ __ _ - --

96 18 FEB 77 20:51z26.C a.C JAPAN 34.Cv 142. O 3C04.0 STA DSTT T LOGIO(A/Mr) + B LCGf (A/M) + 9

B - 9 % o 6 6 .M M B MRF-ON 82.0 416.9 c20 5F OITTED ,, 5.88C 1925 3 1.

6..14

OB2N, 78C 2 623 6.234YT2- 78.0 9c 3. 6.56 6.266. 56

97 19 FEB 77 L: 1:58.0 (I. r N PACIFIC OCEAN 31.ON 147.' 299.0 1.STA DIST AMP T LOGI0(A/-.T) + p LOGIO(A/M) + B

STEO 82S 21.0 r MB NCB2NV87

4.776.29 5.2C6.29

98 19 FEB 77 5:51: i.r 0.e KAMCHATKA rl.C'N 156.,E 313.9 C.STE DIST AMP LOG1O(A/Mi) + B LOGlf (A/M) + BoB,-C 62.3 28.7 g. 4.96 M.OB2NV 6.8 93. P (.9 547NT2NV 6 .6 23.1 C.6, 4.75

5.374.53

9 1 iS 2 P 77 22:33:55.0 n.C ALEUTIANS '3.CN 173. OE 312.3 .STt DST p TOG1I(A/MT) + P LOGII (A/M) + BHU-A 68.0 7 to B ,BBK-40N 53.3 583:1 U.N

6.U8OB2NV 5.2 232.6 60.7t53 . , " 5.77 .•NT24V 5C.1 533. 6.13

5. '716.1310) 19 FEB 77 22:47: 7. 0 t.r ALEUT-IANS 49.CN 17!, 1679 Y69

ST DIST (A/T) LGIC (A/H) + BRF-CN 54. 8 91.6 0 605 MBOB2NV 49.9 21.1 r 54.5V49. 3 4.2

NT2NY 49..~ 48.5 ).7r 4.90 4.23

101 20 FEB 77 7: : t.e CKO KCDIAK IS. REG. 6.tPN 152. w 319.7ST& DIST AMP LOG10(&/!!) + B LOGIC (A/rH) + BPB-CN 34.1 12.4 ,.7C 4.36 ?c MB

0B2NV 3(.1i 5.8 r.8C 4. 2 4.21-. 93

102 20 FB 77 8: 0:36.C 0. A ALEUTIANJS 51.CN '74.'n E 300.6ST DIST AMP T LOGIO(A.47) + p LOG&1 (A/M) + B8K-ON 54. 192.1, r.7 MB f4BNAT 4. . 05.65

OB 2NV 5 6 . CIO 5 .O6 S. c C.N T .9 1 6 .2 t : 7 0 4 .0 . ,97 f4.49

4.33

103 9 MAR 77 22:46:44.A 0.0 W. BRAZIL 8. 1s 63. I 12r.6 r.SA DS AlP TLOGV1C(Ag"T) + B LOGIC (A/M) BiN-ME 54. 160.5 if 5

aKO 4 2Q 7 ;:0 5. cMBCHDn 61:9 7 .i:16.5 55NT-NV 67.3 163.3 5.55 6.22NT2 V 67.2 115.9 5.9V 5.S

104 9 MAP 77 14:27: 5,C R .E. CHINA BOB 42.ON 130.fE 316.4 r.LC-RM T

, LOGIC (A/N) BST ST AMP. 7 MB ME

5N-MR7. .3 6.65 ,* OMITTED ,, 6.49K 1.0 6.

5.83 6:73

A-12

105 12 MAP 77 2:58:55.0 0.0 W. ATLANTIC BRGE 32.t~ 11 N .lw 70.5 *STA rIST IMP NBI A/TBK-cu 5 .6 5.0VZ/)

NB2NY 6 J:2SU T N V 2 9 8 5 . 9 96 )

106 13 PAR 77 48:55:55.0 O.C BP~L2.OS 58.04 '012.2 0.ST I- IP TLCG14 (A/MT) .PLOe.10 (A/pl + B

HN-NE 49.t 56. 5.1 5.2BK-CEN 6C.9 313.' 6 :4 5.962!O82Np 66.14 114. 5.69NT-NV 66.7 220.f :6 9. 5.?NNV 66.6 183.6 1.8 5.pa

107 12 MAP 77 21:15:17.0 0. C EEVL 1.0w 648. ON 114.3 'STA DIST AMP TLOGIfl (A/"T) *PLOG113 (A/11) + iK?8MP 485.3 119.8 9 5!17 5.1rRK-CN 55.8 5.508. 51-OB2NV 6J: . 1 51*50NT-NV 6,. N14 5. r) 5 4gNT2NV 60.2 30C. 2 U.99 5.9f 5.91

10~8 15 NAP 77 21:2e: 9.0 0.0 CCSTA R!CA 9. N 83.I~ 124.7STA~ AMS JP -LCG10 (A/MT) +BLOG14',p (k +1~C 2 80.9 C.10 5.3OB2NV 411 55 %7

!8NT-NV 4831 27 5 6:0 4T2V 41:3 2CF02 0.7C 5.51 35.37 S.22

19 16 MAP 77 6:22:19.0 0.0 ALASKA )pNr. 5.u 5.w 318.6 .STA DST A 4pLOG1't (A/T) L3P LOGIO(A/M) + BPK-Ow 3 .! 16. t C 4.43JRONY 32.0'7 13.18 8

£8.26#1iN 3184.454:NT-? :8 38. 97 £8.86" V 39 31.4 9~. £85 783

11C 19 MAP 77 110:5 6: 6.r, C.C KUPILES £83.6N 14 9. CI 3f8. 5STk DI Al T LOG10(A/.fRT) 4 9 LOGIO(A/m) BRN-M! 85S; 434. NB 618XTW 6.2832 6?lT2NV 68.6 498.46j

11-N 8. 324 86. 6.

11 1 MAP 77 19:21:40.0 O.r RUMANIA 448.0 N 26. "1 26.48ST M OGlO (A/NIT) 4B LOGIP (&/"I4fKTA ? r .AM 60

PIOBN 76.45

NTN 9 :9 229 70 6.0 7 OMITTED 3NT2NY 91.9 23 . 3 C. 8 6 1i 0 MITTED * ~ 6

112 7 MAR 77 0:29:11.0 C.C W.I. CHINA 43.Cil 11a.cp 325.8 0.STAr ~Is (N L~ A/N7) pLOGlrI(Aj.) + B

11 NY g OITTED87:6 143CRITTED

A-11

57A T, I 'r 4P tCGG1(A/P~4LGSAMFY-CN T4* 73.5 0.

74 43 - V 6r M ' (AMF2v 7'a 137.~ 3 ~ 5.20 M.3?N-2 N'v -ro: 1 2 : 75.815.35. 70 5

5. 40

ST : T AppLOGi) (.k/MT) + B 2 A84K1 13.8 q I r 4.764E

C .61 M ~A M ~ B L CI (A / ") +NTc I3* 6. 6. e :684 4,PNv 94 29 - rV 1.1*Nt N2~*

5.32 1 .6 4 ~ ~T r 7 6 51 L3116~~~.3 234P'7 21 : 5. . C'.o 11fN 8 .

5.33

5~~~AA P1 T T t0G 1I(A ,) + p C 1 (A w

S3. 71 6 61. qM 0Bl rA ML B1 G i (AM + pN!'2N v 6 0.9 c 9 3 4 51.9l

4.N 2 r-5:1 QCITD4. 13.2

R 23 AP 77 23:11: 25. C~ ~ CST Vts, TEI 5?1eN 16e.w It 9. ~ r44A 0 1 217( LO l rAM ) B OGIC (A/ "iO 2Nv 98. 19 7 5

6.MBN' -N 3 .6 2E 6"s 6 : 5 . 5.4 aN~~Biv .3. 21 : 9t 54

58117 2 MA 77 3 5: :Cfj. HOKK*C 5. ON~j I 4. AESIX D sST AM

OGl0 (A/Mp * OG'Tpj

BKON ~ 8.9 7 0 7 .1NT-NV 9 7~: :8 46 8 TT D

6 7F 4A-f2 .

N_7 N V~- -

6 9~ f2 5c

--9

APPENDIX B

* Vertical short period waveforms of allevents digitized for the computation of At*

~~~ .__._._._...............................

I

I

I9

*! -~ I" "

I-- ."- .

$ ..

I--

, ; A . .-

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a Ih

2 1

I

a

B-3

A-

I I

at

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0

B-4

a--

o- -5

C-,I-_. _ I

U I

II

a I

2 ;M!a- NA

'5

au

ui co

nu 'T

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a

1B-A f *1

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a r

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ft

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aB-f+

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14

I-x

a 4 J

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aT

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B-15

a 1

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Lai'

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IB-16

o J

I C

C-) 4

B-1

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4t

I?

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a

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C-5,

I- N

F- N

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0 -

a p

Z

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I02

sa

.0- Icm

B-20

APPENDIX C

Power spectra of waveforms in Appendix B

14 lip"

r - q .l f--, ... .,

22 SEP 76

0:15:9.3KU RILES

# 86

4

3

OI2Nv StAtE

c-l

22 SEP 76

2:30:30.1

ALEUTIANS

~19

MIR

my it

0.I SCALE

r2

02NVIof

c-2

22 SEP 758:20:27.6

VOLCANO ISLAND

#20

HN-ME *RK-ON

.. ......... , . ..

UT-NV .NT2NV

4

3012MV -- SCALE

I 2 3 4 I Ni

C-3

06 A

21 SEP 76

3:0:0.0

NOVAYA ZEMLYA

#4

Mm-ME RK-ON

.... . ..... .....

.. ... ...

NT-mv NT2NV

4

- SCALE

OD2NV

S I 2 3 4 H

C-4

30 SEP 768:4:10.9

CHILE-ARGENTINA BORDER

#16

HN-ME RKON

NT-NV NT2NV

-- SCALEOB2Nv' .......

C-I 4 110

C-5

4 OCT 76 2323 36 6 OEQUADOR

#22

H N -M Em ( aRK ON

NT NVNT2NV

4!

SCALE-2

DS2NV

f

o0

0 3 4

G-6

I OCT 7514:38:27.9KURILES

#26

Rn-ON

NT-NV xNT?2NV

4

3

Bb SCALE082NV

C-7

-~ -- e- ---U -- -- -

-"--,

* OCT 76

2:62:24.3

KU RILES

#29

xHN-ME RK ON

NT-NV N T2N V

a. SCALE

GIRNY. .;. 2

S I 2 3 4 N

c-8

r's-,wm

9 OCT 7612:31:6.6

COSTA RICA

#128

HNME WKON

NT-NV NT2NV

C-9

9 OCT 7616:2:26.9

N. COLUMBIA#30

HN-ME RIC ON

NT-NV N72NV

SCALE

oP7NV

0

0 C2 3 10 ~

7 -t

I OCT 76

21:10:24.1

PERU COAST

#32

....

V HPN-ME ,.

WM RKON

I-I

NT-NV NVT2NV

VS C A LE0B2NV

U i 2 2 * t H

C-11

gk ... .

9 OCT 76

23 48 9 0

COAST OF CEN AMERICA

ft 3 3

xHN-ME RK -ON

xNT-NV NT2NV

. . .. ... .......

S, 3

SCALFxOBNV 2

I I , I

5 1 2 3 4 S lt

C-12

-

10 OCT 76

2:51:1.6

KURILES

#34

xHNME RK-ON

" ......

xNT-NV NT2NV

4

BSCALEOS2NV"

I I.I.. I I I

2 I 3 4 I#NC-13

19 OCT 71

14:32: 4.1

KURILES

# 36

HNIME AK ON

.......

NT-NV NT2NV

4

SCALI

OB2NV

I I I IS 1 2 3 4 5 Ni

i c-14

12 OCT 764:24:52.1

JAPAN

S38

HN-ME RK-ON ""-......

NT-NV NT2NV

I I I I

4

..

b SCALE

OE2NV .. ,,

I I I , I I II 2 2 4 | Ni

C-15

12 OCT 7623:49:24.3COLUMBIA

#39

xHN-ME RN-ON

NT-NV NT2NV

4

3

a. SCA(E012NV2

C-16

13 OCT 7617:35:45.1

VENEZUELA

#40

HN-ME RK-ON

NT-NV NT2NV

SCALE

082NV

2 3

7-I

22 OCT 764:4:22.6

COAST OF NIECARAGUA

#43

HN-ME IFDWO

NT-MVMT2NV

SCALE02mv

C-18

22 OCT 765:53:50.9

EL SALVADOR

#44

HN-ME K-ON

• -*. ..... . ........

NT-NV NT2NV

t I I Ii I

........

4

°.. ....

. SCALE082NV z

4 S IC1 2 4 S1i

C-.19

22 OCT 76

18.35:23.9

KODIAK REGION

#45

HN-ME RK-ON

NT-NV NT2NV

SCALE

ODB2NV"

I I I I __ _ _ __ _ _ _

0C 2I 2 3 4 I

C-20

Z4 OCT 79t7:10:S5.5

ALASKA

#46

- RK-ON

L AIT-MV-- N NT2UV

LJL

, 4

-OIU2V m CL

SEL

1 2 3 4 5 #,

C-21

26 OCT 765:59:56.4KURILES

# 47

HN-MERK ON

F - N T -N V '"

"" '

__

N~T2NV -.,

4

SC I

"'. N SC

2

0 1

3

C-22

r ----

-. . ....

" ... . ... ...-- ..-

--.- - - ----.

--- - -,

28 OCT 76

9 51:21 3

PERU

#48

HN-ME X

RK-ON

NT-NV NT2NV

......

",..

S

032V -SCALE00I2NV SC(

~2

L

C-2 2 3 4 E1.C-23

2 NOV 7619 :23 :23.KU RILES

9f49

HN-ME RK ON

NT NV NT2NV

C-24

As

16 NOW 76

14:14:2f.g

KURILES

Ni N-MERK-ON

NT-WjV x

ODZ~v -SCALE

C-25

22 ?Eov 16

20.9 2 7

VENEZUELA

#5 3

HNME- RK ON

NT-NVNT2NV

44

C-26

23 NOV 76

6:3:0.EAST KAZAKH

#27

HNME AN-ON

.. . . . ... ...

NT-NV NT2NV

SCt

44

C-27

26 NOV 7623:43 12.6

PERU-ECUADOR BORDER

#54

HN-ME

NT-NV NT2NV

5

-- SCALE082NV

C-28

A

30 NOV 71

CNIll SOLIVA 11O1tail

#59

NW-ME

NT-NyV

I NT-NV

OS2NySCAtf

L ~0L

C-29

I DEC 7614:16:33.2

COSTA RICA

#55

HN-ME. RK-ON

14 M

NT-N V NT 2NV

4

3& SCALE

032m0

0 ~ 3 4 I4C- 30

I DEC 76

1744:33.9

COAST OF CEWi. AlMERICA

#/56

RN-ON

NT-NV TN

4

DIM

7 4 -qlr ,n

3 DEC 76

5:27:34.4

CHILE-BOLIVA BORDER

#57

HN-ME RK ON

NT-NV NT2NV

I I

SCAt

OB2NV 2

t 2 3 4 S "

C-32

LA

3 DEC 762 3:10:23.1N. CHILE

#58

WNME W KON

NT-NVNT2MV

4

3 SCAll012NV

C-33

4 DEC 76

5:6 29 7

N CHILE

#60

HN-ME AK-ON

NT-NV NT2NV

4

z 30.SCALE

O32NV - 2

C3 2 4 SM,

C-34

n - - -- - - - -. - -_-

4 SC 7912:32:31 4It. CNILE

#61

N NN-MERK

ON

NT-NVNTZNv

SSi

C-35

5 DEC 78

22122 1

BONIN ISLAND

#62

.... ... ..............

MN-ME KON

NT-NV NT2NV

S I i I

SCALE

O2NV 2

,SI1 l I Ic 2 3 4 S #

c-36

6 DEC 76

19:46:2.4

EASTER ISLAND

#63

HN-ME RK-oN"

I

NT-NV *NT? NV

4

SCAtf062EV

C-2 7 4 5H*

C-3 7

7 DEC 76

9 3641.4

S HONSHU

#164

rHNME RKON

NT NV NT2NV

SCALEOB2NV

Z1 2 3 4 2 H:

" ' C-38

13 DEC 78

23128.0

.PACIFIC

S75

K HN-ME RK-ON .

.... °.......

NT-NV NT2NV

SCALE

0321Y082NV

* "IS 2 2 4 5 Ni

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14 DEC 7616 :6:56 .D

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15 DEC 76

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13 DEC 76

14:37:30.0

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22 DEC 76

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6 JAN 77

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17 JAN 776523:42.6

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24 JAN 77

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C-55

21 JAN 77

4:24:26.0

BONIN ISLANDS

(This Event Inadvertently Omitted From The Data Shown In Appendix A)

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I I ____________________________

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3 FEB 77 2121:30:59.0

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13 FEB 775:51:11.0

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15 FEB 77

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17 FEB 17

13 32 7 0

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13 FEBn 7720:5121.0

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13 FEB 77

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10 FEE 7722:47:17.0

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4 MAR 77

19:21,40.0

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7 MAR 77

0:22:11.0

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7 MAR 779:11:55.0

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I MAR 7"

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12 MAR 77

2:53:55.0

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13 MAR 774:55

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15 MAR 77

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19 MAR 77

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23 MAR 77

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C- 77

26 MAR 77

4:36:10 0

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29 MAR 77

3:57:0.0

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C-7 9

APPENDIX D

Amplitude spectral ratios of waveforms in Appendix B

j

22 Sip IS

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22 SEP 76

3 20 216

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233AS 0

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I OCT 76

16 2 26 1

4 COIUMBIA

#30

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18 OCT 76

14 32 4 0

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12 OCT 16

23 4124 3

COLUMBIA

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NT NV NT NV

NT NV OI2NV

01 I082M V

I A-ON

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D-16

13 OCT 76

17 35 45 1

VINIZUELA

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22 OCT 76

4 422 S

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22 OCT 76

5 53 So I

EL SALVADOR

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NTlygV ItTIP

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MT MViHNEmv MT XV

MT-NV032EV 082Ev

MEMO-M

03E

RODE RIDE

MEM

22 OCT 16

18 15 23 9

RO0115 REGION

NT2NV

082NV N72NVNT NV

N T MV NT WV

NT-NV OB2NV

I 3 4 5

* I IOUINCY IM)

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__________________--~-.----~- - ---- -- ---

AIL

--

24 OCT 71

'7 19 55

ALASKA

g46

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MIT NV

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D-21

26 OCT 766 9 56

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pilzmv NTN

NTINV NT NVi(m ME ON ON

NT-K' 02E

032Ev HN-ME

032mV RI 1K -N NE-ME

3 4

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D-22

20 OCT 1a

9 59 21 3

PERU

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W, I NV

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KU NILIES

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D-24

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4

D-25

22 Nov ?I

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23 NOV 76

1 KAZAKH

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26 Nov 16

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20 NOV 10

0 40 57 0

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1144 33 a

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7 DIC 11

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13 DEC 76

23 17290

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14 3730 0

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20 DEC 10

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10 371335

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D-49

6 JAN 77

22 44 67 a

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4MAR 77

R UMANIA

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NT2NV032NV NT2NV

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f N E O N A N - M EO

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12 MAN 77

2 So 56

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13 M1AR 71

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11201 k!V

IT IV

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16 MAR 77

COSTA RICA

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08211V NT NV

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4*4 -

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1S MAR 77

SURE

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..........................

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....... ...........

DillyRU-Om

"thi

D-7

-7

21 MAR 77

4 31 31 0

VOLCANO ISLAND

# 1

NT24OV Ny2NVWIN -ME K ON

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11-%V N NlVHN-ME AN-ON___________

N-NVI OB2NVOl2EV MI-ME

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I I 2 2 4 K1-T F-7 T ---

D3-76

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ol116

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26 MAR 7)I

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21 MAR 71

3 67 18

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NT-NV

-44

Faleflucy ton

D- 79

APPENDIX E

Vertical short period waveforms, power spectra, andamplitude spectral ratios for events at SE-MN and SZ-NV

5 JAN 6317 43 33 1

SEMN Sl NY

S SEC C______5 SEC

. at-0 23 30

• ..

9 3

2

SENI

4

E-1

V-ol

8 JAN 6316146,44 1

SE-MN sz Nv

u.- .

5 SIC 6 WE-

w~ 15

22 2

I I I I

S 1 2 3 4 S I 6 i2 -2

11 JAN 6312:12:15 g

Sl-MIN sz NY

V (P

s SEC 6 SEC

S4 4 -

3-2

2 2

0 1

0 1 2 3N 4 5 He 0 4 N

4

P

3-

* SZ-NV

2 SE-N

S 1 2 3 4 S No

E-3

12 JAN 633:40:33.1

SE-MN SZ-NV

4 * 44

v A

I £ 5 *o . .. .

e I I . I I I I1 2 3 4 1 %a 1 2 3 4 1Hz

S I 2t 3 4 5Hz

44E24 -MU

E-4

13 JAN 6317 20 21 6

SE-MN

S sic

a.3

zzm10 -YE- -ma

43

1 2 3 4 E-5

S ALSw

16 JAN 635:44:54,4

SE-mN SZ-NV

4~~ 4i A*.

33

13 4 E 6H

1 11

I I I IE-6

16 JAN 6312.32-37 1

SE MN

SZ NV

I SSEC

Vn 4---- s sic

2 3

j SF-MN

3 ,

'aE-

Cu

, C,-

2 0

.. .

16 JAN 63

1609 114

SE MNtZ NV

sS EC IScL .-

5 SEC

4 ......**4 °*°

........

44

3 *, °. U -

4 --

2 a -

2- , _} 0 .

a L .jIN a 2 3 4 I

-- ------------

.z

aE -

, - SZ- ...

3. SE-•MN.. .

21 JAN 634 15 43 3

SE m" sz NV

6 SEC 5 SEC

22

1 2 3 4 5 HI 0 I 2 3 4 I~

S I 2 3 4 N

2 2 SE-9

wU

- . --- -

21 JAN 634 2504 6

SE-MN SZ NV

-v-- . v' ' .... - v ,

S SEC S SEC

U .... .

U a•3- 3

I I J oII

I 2 3 4 6 "1 O 1 2 3 4 S#

1 2 3 4 5 Hz

2- SEENV:

i 4 :

4-

B-10

A&A

27 JAN 6319 35 16 3

SE.MNSZ NV

5 SEC

4 4.....

3a44

0 E-1

a

°

0 -

1 2---- 2 --

44

E-11M

• ,m ;. " ... e __ .. . . - . .... . .

26 JAIV 63

SEE-12

28 JAN 63

4 531's

SE-MN 5z "V

AN- -'.- W-- - Ap

f SK 3 4

a4

22- 2 tM

I E-13

..... I I

28 JAN 6313 00 48 1

StEWN SZ NY

5 SPC 6 Stc

SUM

1- -M

CE 1

Sq

29 JAN 63U 21A6.2

SE MN SZ NV

AJ .,.- LoAvj ,;

....... ......

s SIC s SEC

It

a.

22

I I! - .

I _________________________________________ *L... 1 I0 1 2 3 4 | #N 2 3 4 5 Ns

U ' SI-MU

E-15

31 JA N 635 06 43 4

Sf MN SZ NV

s sic s SEC

44 4

44

Lb:! 3- . 4-

a a

S2 3 1 l 0 2 3 4

2 3

0 I 2 3 4 5H 3 4S

0 I I 5

, 2 SZ-NVI_.

S- UMN

E-16

5 FEB 6312:08.20 5

SE-MN SZ NV

VV v L ... I

------ iv-

s SEC 5 SEC

4

. .. 3

%..Lp

40 is

S3 I. 1 4 . _ _

2 3 4 SI

SZ-NV

E-1 7

eA

5 FEB 6317 4 57 3

SE-MN SZ-NV

b SiC L j--_ -5 SEC

if -- °°'

I

I.-. I

olI I I1 I I I J0 1 2 3 4 6 "1 1 2 3 4 5 141

4-

3-

S2. sz-NvSE-Mm

I -

a~ 2 3 4 IN,

E-18

5 FES 6320191 0A4

44

3 4 I I I z 3 4 6o

2 2

As

6 FEB 633;2756.9

SE-MN SZ-NV

6 SEC5 SEC

4--

..........

U HE

* wo°

~SZ-NV2, SE-MN

E-20

:2 : " 2 .. . - -,"-"-,,, .

I,"

., ,, I ... .. .

S 2 3 S• -2,34 Sl

6 FEB 6311:17.11 3

SE-MN SZNV

v Vv )v vA

S SEC SEC

=1.. ...3'-

2~

0 3 H

2 2C I I I ! 8 -- I I I IO 1 2 4 SW 3! 1 2 3 4 1 Nz

S1 2 3 SH

SS-MN

'-21