C O M M O N W E A L T H O F A U S T R A L I A

D E P A R T M E N T OF N A T I O N A L D E V E L O P M E N T

B U R E A U O F M I N E R A L R E S O U R C E S ,

G E O L O G Y A N D G E O P H Y S I C S

GEOPHYSICAL OBSERVATORY REPORT

VOL. 14 NO 6

JUNE

1966

Issued under the authority of the Hon, David Fairbairn,

a^inister for National Development

DEPARTMENT OF NATIONAL DEVELOPMENT

Minister - HON. DAVID FAIRBAIRN D.F.C, M.P.

Secretary - R.W. BOSWELL

BUREAU OF MINERAL RESOURCES,

GEOLOGY AND GEOPHYSICS

Director - J.M. RAYNER

This Report was prepared in the Geophysical Branch;

Assistant Director - L.S. PRIOR

Supervising Geophysicist - W.D. PARKINSON

C O N T E N T S

Page Observatories 2 Data : Mawson 5

Wilkes 6 Macquarie Island 7 Toolangl 8 Gnangara 10 Port Moresby 12

Unless otherwise stated all times are given In Greenwich Mean Time

The terminology used in this report Is that accepted by international convention. Should further Information be required, explanation can be obtained by applying to :-

Assistant Director (Geophysics) Bureau of Mineral Resourcesj P.O. Box 378, CANBERRA CITY, A.C.T.

CONTRIBUTING OBSERVATORIES

GNANGARA MAGNETIC OBSERVATORY P. M. McGregor, Observer in Charge Geographic Latitude 31°47'S Geomagnetic Latitude -43.2

Longitude 115 57'E Longitude 185.8°

Instruments Askania magnetometer No. 5088X0 La Cour QHMs No. 291, 292, 293 La Cour BMZ No. 120 Eschenhagen D, H & Z recording variometers

Sensitivity

Recording speed : Askania (Eschenhagen type) H variometer with

Sensitivity : Recording speed :

D 1.1 mln/mm H 2.5 y /mm Z 5 . 2 y /mm 20 mm/hour visual recorder 3 y/mm 20 mm/hour

MACQUARIE ISLAND MAGNETIC OBSERVATORY E. J. Mulr, Observer In Charge

o Geographic Latitude 54 30'S Geomagnetic Latitude -60.7°

Longitude 158 57'E Longitude 243.0°

Instruments Askania declinometer No. 640505 La Cour BMZ No. 64 La Cour QHMs Nos. 177, 178, 179 La Cour D,H & Z recording variometers Standard instrument : Sensitivity

Recording speed Rapid-run instrument :Sensitivity

Recording speed

D 2.4 mln/mm H 25 y/mm Z 21 y/mm 15 mm/hour D 1.0 min/mm H 5.4 y/mm Z 9 y/mm l80 mm/hour

CONTRIBUTING OBSERVATORIES

MAWSON MAGNETIC OBSERVATORY P. Towson, Observer in Charge

Geographic Latitude 67°36'S Geomagnetic Latitude -73.2°

Longitude 62°53'E Longitude 103.1°

Instruments Askanla declinometer No. 630332 La Cour BMZ No. 62 La Cour QHMs Nos. 300, 301, 302 La Cour D, H & Z recording variometers

Normal sensitivity

Recording speed Low sensitivity

Recording speed Bar fluxmeter D magnetograph

Recording speed

D 0.9 mln/mm H 9.6 r/mm Z 10.0 r/mm 15 mm/hour D 2.4 mln/mm H 51 y/mm Z 50 r/mm 15 mm/hour 5 mm/minute

PORT MORESBY MAGNETIC OBSERVATORY D. Denham, Observer in Charge

Geographic Latitude 9°24'S Geomagnetic Latitude -18.7° Longitude l47°Oc

Longitude 218.o'̂

Instruments Askanla declinometer No. 580333 La Cour QHMs Nos. 187, l88, 189 La Cour BMZ No. 68 La Cour D, H & Z recording variometers Standard Instrument : Sensitivity

Recording speed Rapid-run Instrument :Sensitivity

Recording speed

D 0.44 mln/mm H 2.8 y/mm Z 3.3 r/mm 15 mm/hour D 0.05 mln/mm H 1.2 r/mm Z 0.3 r/mm l80 mm/hour

CONTRIBUTING OBSERVATORIES

TOOLANGI MAGNETIC OBSERVATORY C. A. van der Waal, Observer in Charge Geographic Latitude Geomagnetic Latitude -46.7

37°3g'S Longitude l45°28'E Longitude 220.8°

Instruments Ruska magnetometer No. 4813 La Cour QHMs Nos. 288, 289, 290 La Cour BMZ No. 119 La Cour D, H & Z recording variometers

Sensitivity

Recording speed

D 1.2 min/mm H 4.5 y/mm Z 4.4 y/mm 15 mm/hour

WILKES MAGNETIC OBSERVATORY F. J. Taylor, Observer in Charge

Geographic Latitude 66°15'S Geomagnetic Latitude -77.2

Longitude 110 31'E Longitude 179.2°

Instruments

Askanla declinometer No. 640506 La Cour QHMs Nos. 492, 493, 494 La Cour BMZ No. 236 Ruska D, H & Z recording variometers Standard Instrument : Sensitivity

Recording speed Rapid-run Instrument :Sensitivity

Recording speed

D 10 min/mm H 25 y/mm Z 21 y/mm 20 mm/hour D 1.1 min/mm H 5.1 y/mm Z 7 y/mm 240 mm/hour

M A W S 0 N MAGNETIC K-INDICES - JUNE 1966

Range for lower limit of K-9 Is I5OO gammas

Day K-Indices K-Sura 1 7 4 5 2 1 1 0 1 1 21 2 3 2 2 4 5 3 4 5 28 3 3 2 3 2 2 3 4 4 23 4 3 4 2 1 2 2 1 4 19 5 3 3 3 2 3 1 3 3 21 6 4 5 2 1 2 1 0 4 19 7 3 4 2 3 3 2 2 1 20 8 3 3 2 3 3 2 1 2 19 9 1 1 1 2 2 2 4 5 18

10 2 2 2 1 0 0 1 4 12 11 2 1 1 0 1 2 4 3 14 12 2 4 3 2 2 2 3 5 23 13 4 3 3 3 2 1 2 4 22 14 3 3 3 3 2 1 5 5 25 15 3 2 2 1 1 1 5 4 19 16 4 3 2 3 2 2 4 5 25 17 4 3 2 1 1 0 4 4 19 18 2 3 1 0 0 0 4 2 12 19 3 2 2 1 1 3 3 4 19 20 2 2 2 3 3 2 4 3 21 21 3 4 2 3 3 2 1 3 21 22 2 2 2 2 2 2 2 5 19 23 4 4 3 3 3 5 4 6 32 24 3 2 2 2 3 2 6 6 26 25 4 5 5 3 3 3 5 6 34 26 3 3 2 2 2 3 3 4 22 27 2 1 2 1 1 1 2 3 13 28 2 2 2 1 1 2 4 4 18 29 5 3 2 1 1 2 4 5 23 30 5 5 3 3 2 0 4 6 28

PRELIMINARY MONTHLY MEAN VALUES Based on 10 selected quiet days

1966 H D y t

June 18366 6i°23.6W Z y

-48185

W I L K E S MAGNETIC K-INDICES - JUNE I 9 6 6

Range for lower limit of K-9 is 2500 gammas

Day K--Indices K-Sum 1 3 3 3 0 0 0 0 0 09 2 2 2 2 3 2 1 2 1 15 3 2 2 3 1 1 1 2 1 13 4 2 2 2 0 0 0 0 2 08 5 2 3 2 1 1 0 0 1 10 6 1 2 2 1 0 0 0 0 06 7 8

2 2 2 2 2 1 0 1 12 7 8 1 2 2 2 1 0 0 0 08 9 0 1 1 1 1 1 1 1 07 10 1 1 1 1 0 0 0 0 04 11 1 1 0 0 1 0 2 1 06 12 1 2 2 2 2 2 0 1 12 13 2 2 2 1 2 0 1 1 11 14 1 2 2 2 1 0 1 1 10 15 1 2 1 1 1 1 2 2 11 16 3 2 1 1 1 1 1 1 11 17 2 2 1 0 0 0 1 1 07 18 1 1 1 1 0 0 1 1 06 19 1 1 1 0 1 1 1 1 07 20 1 3 2 1 3 3 1 1 15 21 1 2 2 2 1 1 1 1 11 22 2 2 1 1 1 1 1 1 10 23 2 1 2 2 2 2 2 3 16 24 1 2 1 1 2 3 3 3 16 25 3 3 2 3 1 3 2 2 19 26 1 2 2 1 1 4 1 1 13 27 1 1 1 1 1 1 1 1 08 28 1 2 1 1 0 2 2 1 10 29 3 2 1 1 1 1 2 2 13 30 2 2 2 3

PRELIMINARY MONTHLY MEM VALUES Based on 10 selected quiet days

1966 H D Z y I y

June 9217 86°35.6w -64643

M A C Q U A R I E I S L A N D MAGNETIC K-INDICES - JUNE 1966

Range for lower limit of K=9 Is 1500 gammas

Day K-Indices K -Sum 1 3 2 3 0 0 0 0 0 08 2 1 1 0 4 5 5 1 0 17 3 0 0 0 0 1 2 1 0 04 4 1 1 0 1 0 0 0 0 03 5 2 1 0 1 2 0 0 0 06 6 1 1 1 0 0 0 0 0 03 7 0 1 3 5 5 1 0 0 15 8 0 1 1 3 2 0 0 0 07 9 0 0 0 1 0 0 0 0 01 10 0 0 0 0 0 0 0 0 00 11 0 0 0 0 1 0 2 0 03 12 0 1 0 1 3 1 0 0 06 13 0 1 1 0 2 0 1 0 05 14 0 0 3 2 2 0 1 0 08 15 0 0 0 0 2 0 1 1 04 16 1 1 0 2 1 2 1 0 08 1 7 0 1 0 0 0 0 0 0 01 18 0 0 0 0 0 0 0 0 00 19 0 0 0 1 1 0 0 0 02 20 0 1 2 2 3 3 1 0 12 21 1 0 1 1 2 1 1 1 08 22 1 0 0 0 0 0 0 0 01 23 1 0 1 3 5 4 5 4 23 24 0 0 0 1 2 2 3 3 11 25 4 3 4 5 3 5 2 1 27 26 0 0 0 1 3 2 1 1 08 27 0 0 0 0 1 1 0 0 02 28 0 0 0 0 0 2 2 0 + 04 + 29 1 1 0 0 0 0 0 1 03 30 0 1 2 4 0 1 0 1 09

PRELIMINARY MONTHLY MEAN VALUES Based on 10 selected quiet days

1966 June

H r

13119

D 26 3 7 . 6 E

Z y

-64197

T O O L A N G I MAGNETIC K-INDICES - JUNE 1966

Range for lower limit of K-9 Is 500 gammas

Day K-•Indices K-Sum 1 4 3 3 2 0 0 1 1 14 2 2 3 2 4 3 3 2 2 21 3 2 2 2 1 1 3 2 2 15 4 2 2 2 1 0 0 0 2 09 5 2 3 2 3 2 1 1 1 15 6 1 1 2 1 1 2 0 1 09 7 2 2 3 4 3 2 1 1 18 8 2 1 2 2 2 1 1 1 12 9 1 2 2 1 0 1 1 1 09 10 2 2 2 0 1 1 1 2 11 11 2 1 2 1 1 2 3 2 14 12 1 2 2 2 3 2 1 2 15 13 1 1 2 2 3 1 0 0 10 14 1 2 3 1 1 1 1 2 12 15 2 2 2 1 2 i 2 2 14 16 2 2 2 2 1 2 1 1 13 17 1 1 2 0 1 0 1 2 08 18 1 1 0 1 0 0 1 2 06 19 0 1 2 0 2 2 2 2 11 20 2 3 3 2 2 2 1 2 16 21 2 2 3 1 2 1 1 2 14 22 1 2 2 1. 0 1 0 3 10 23 2 1 2 3 3 3 3 3 20 24 2 2 3 2 2 3 4 3 21 25 4 3 3 3 2 4 2 2 23 26 2 3 2 2 1 3 2 3 18 27 1 1 2 1 2 2 1 1 11 28 1 1 2 1 0 2 3 2 12 29 1 1 2 0 1 1 2 2 10 30 2 2 3 3 1 2 2 2 17

T O O L A N G I PRELIMINARY MONTHLY MEAN VALUES Based on 10 selected quiet days

1966 H D Z y y

June 22510 10°34.3'E -56364

PRINCIPAL MAGNETIC STORMS - JUNE I 9 6 6

NIL

SUDDEN COMMENCEMENTS AND OTHER PHENOMENA - JUNE I 9 6 6

Sense of Movement

Day Time Type H D z Day h m

3 16 20 bs B + + 6 16 37 p i 2 C 7 09 55 bp B 4 _ +

13 38 bp B 4- - 4-11 1 7 55 bp C + + 12 11 56 p i 2 C 13 1 3 44 bps C + _ 4-16 15 50 bp C * + . 4-21 12 11 bps C 4. _ + 25 16 10 bp A + +

G N A N G A R A MAGNETIC K-INDIGES - JUNE I 9 6 6

Range for lower limit of K=9 is 350 gammas

Day K-Indices K-Sum 1 5 2 3 1 0 0 0 0 11 2 1 1 2 3 2 2 3 1 15 3 1 1 1 0 1 3 3 1 11 4 1 1 0 0 0 1 0 1 04 5 2 2 2 2 2 0 1 1 12 6 1 1 1 1 1 1 0 0 06 7 1 2 1 3 2 1 1 1 12 8 1 2 2 2 1 1 0 0 09 9 0 0 1 1 0 1 2 1 06

10 1 1 1 0 0 0 0 0 03 11 0 0 1 1 1 2 3 1 09 12 1 3 1 2 2 0 1 1 11 13 1 1 1 1 2 0 1 1 08 14 1 1 2 1 1 0 1 1 08 15 1 1 1 1 1 1 3 2 11 16 2 1 1 1 1 2 2 1 11 17 0 1 0 0 0 0 1 1 03 18 1 0 0 0 0 0 1 0 02 19 0 1 1 0 2 2 1 1 08 20 1 3 2 1 3 2 2 1 15 21 1 1 1 1 1 1 0 0 06 22 1 1 1 1 0 1 1 1 07 23 2 1 1 3 3 3 4 3 20 24 1 1 1 2 2 2 4 4 17 25 3 3 3 3 2 4 2 2 22 26 1 1 1 1 2 3 2 1 12 27 1 1 0 0 1 1 0 0 04 28 1 1 1 0 0 3 4 2 12 29 2 1 2 0 1 1 3 2 12 30 2 2 2 2 1 1 3 2 15

10

G N A N G A R A

PRELIMINARY MONTHLY MEAN VALUES Based on 5 selected quiet days

1966 H D Z y I X

June 23888 2°52.2W -53501

PRINCIPAL MAGNETIC STORMS - JUNE 1966

NIL

SUDDEN COMMENCEMENTS AND OTHER PHENOMENA - JUNE I 9 6 6 Sense of Movement

Day Time Type H D z h m

3 16 18 b B 4- 4- 4.

11 17 55 bp B 4- 4-16 15 54 top B - -

20 14 05 pi2 B 25 16 10 b B 4- - _ 26 16 06 bp B •t- 4-28 17 05 pl2 B 30 19 50 bp B J. 4-

11

P O R T M O R E S B Y

MAGNETIC K-INDICES - JUNE I 9 6 6

Range for lower limit of K-9 is 300 gammas

Day K--Indices K-Sum 1 2 2 3 1 1 0 2 2 13 2 2 2 3 4 3 3 2 1 20 3 1 1 2 1 1 3 2 1 12 4 2 2 1 1 1 1 0 2 10 5 3 2 2 3 3 1 2 1 17 6 1 2 2 2 2 1 1 1 12 7 3 3 2 2 3 2 2 2 19 8 2 2 2 2 1 1 0 1 11 9 1 0 1 2 1 2 1 1 09 10 1 1 1 1 2 0 0 0 06 11 0 0 1 1 1 1 2 1 07 12 1 2 2 2 2 2 1 0 12 13 2 3 2 2 2 1 1 1 14 14 1 1 2 1 1 0 2 1 09 15 0 1 2 1 1 1 2 2 10 16 3 1 1 1 1 2 1 2 12 17 1 1 1 0 1 1 1 0 06 18 1 0 1 1 1 1 2 1 08 19 1 1 1 1 3 2 3 2 14 20 2 2 2 1 2 2 1 0 12 21 2 1 1 1 1 1 1. 1 09 22 2 1 1 2 1 1 0 0 08 23 2 0 2 4 3 2 3 3 19 24 2 2 3 3 2 3 4 2 21 25 3 3 4 4 3 4 2 1 24 26 1 2 1 2 2 3 2 1 14 27 1 1 1 1 2 1 1 2 10 28 1 0 1 1 0 2 3 2 10 29 2 2 2 1 2 1 1 2 13 30 1 1 2 2 1 1 - - 08

12

P O R T M O R E S B Y

PRELIMINARY MONTHLY MEAN VALUES 1966 H D Z

y t y

June 36313 06°09.3E -23020

PRINCIPAL MAGNETIC STORMS - JUNE I 9 6 6

NIL

SUDDEN COMMENCEMENTS AND OTHER PHENOMENA - JUNE .1966 Sense of Movement

Day Time Type H D Z h m

3 16 17 si B + •»• -t 7 13 40 bp B *

13 13 42 bp B 16 15 55 bp B + + 24 09 10 si C - -

25 26 11 bp A 4. + +

13