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Slide 1

UCLA support for THEMIS

August 06, 2007

Status Reports of THEMIS EPO & GBO Magnetometers

Chris. T. Russell, Yasong Ge, Peter Chi, Mark Moldwin and

Tung-shin Hsu

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Slide 2

EPO Milestones• Goal - Install 10 sites between spring 04 and fall 05

LOCATION INST. DATE DATA STATUS

Carson City, NV (CCNV) 8/27/04 07/30/2007

Petersburg, AK (PTRS) 10/06/04 07/30/2007

Hot Springs, MT (HOTS) 10/12/04 07/30/2007

Pine Ridge, SD (PINE) 10/14/04 07/30/2007

Ukiah, OR (UKIA) 11/10/04 07/30/2007

Fort Yates, ND (FYTS) 10/10/05 07/30/2007

Remus, MI (RMUS) 10/12/05 07/30/2007

Shawano, WI (SWNO) 10/17/05 05/26/2007

Derby, VT (DRBY) 10/25/05 06/22/2007

Loysburg, PA (LOYS) 10/28/05 06/13/2007

*Bay Mills, MI (BMLS) 10/14/05 07/24/2007*11th Site not included in original EPO proposal.

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Slide 3

GBO Data Status (UCLA)

LOCATION DATA STATUS

Chibougamau (CHBG) 07/16/2007

Flin Flon (TPAS) 07/30/2007

Goose Bay (GBAY) 07/30/2007

Inuvik (INUV) 07/21/2007

Kapuskasing (KAPU) 07/30/2007

Kiana (KIAN) 07/30/2007

Lac de Gras (EKAT) 12/07/2007

McGrath (MCGR) 07/30/2007

Prince George (PGEO) 07/30/2007

White Horse (WHIT) 07/30/2007

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Slide 4

Sample THEMIS Magnetograms

Sub auroral LatitudesHigh Latitudes

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Slide 5

Sample THEMIS Magnetograms-- Derby

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Slide 6

Website Service

http://www-ssc.igpp.ucla.edu/uclamag/themis_center

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Slide 7

Mid-continent Magnetoseismic Chain (McMAC)Mid-continent Magnetoseismic Chain (McMAC)

● Field line resonance method requires close separation between ground stations in the north-south direction.

● The mean north-south separation between two adjacent McMAC stations is 275 Km.

● Joint operation with CANOPUS Churchill Line (Canada), IGPP-LANL (U.S.) and MAGDAS (Japan) provides the magnetic field data from L = 1.3 to 11+ at one local time (note: the widest stretch of magnetic latitude on the earth).

• Pi: Peter Chi pchi@igpp.ucla.edu

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Slide 8

McMAC Sites

Lyford, TX (Lyford High School)

Linares, Mexico (Universidad Autónoma de Nuevo León)

Glyndon, MN (Minnesota State U. Moorehead)

Bennington, NE (U. of Nebraska, Omaha)

Richardson, TX (U. of Texas, Dallas) San Antonio, TX (SwRI)

Worthington, MN (Minnesota West College)

Americus, KS (Emporia State U.)

Purcell, OK (U. of Oklahoma)

(All nine stations installed)

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Slide 9

ULF Activity Observed by McMAC, CARISMA, IGPP-LANL Combined

0 3 6 9 12 15 18 21 24-700

-600

-500

-400

-300

-200

-100

0

CARISMA-FCHU (L = 7.68)

CARISMA-GILL (L = 6.32)

CARISMA-ISLL (L = 5.27)

CARISMA-PINA (L = 4.13)

MCMAC-GLYN (L = 3.42)

IGPPLANL-CAM (L = 3.25)

MCMAC-WRTH (L = 2.87)

MCMAC-BENN (L = 2.58)

MCMAC-AMER (L = 2.29)

MCMAC-PCEL (L = 2.00)

MCMAC-RICH (L = 1.87)

MCMAC-SATX (L = 1.66)

MCMAC-LYFD (L = 1.53)

UT [hours]

BH

[nT

] (A

dju

ste

d B

ase

line

s)

Magnetogram 2006-06-19

18:00 :15 :30 :45 19:00 :15 :30 :45 20:00

-80

-60

-40

-20

0

20

CARISMA-FCHU (L = 7.68)

CARISMA-GILL (L = 6.32)

CARISMA-ISLL (L = 5.27)

CARISMA-PINA (L = 4.13)

MCMAC-GLYN (L = 3.42)

IGPPLANL-CAM (L = 3.25)

MCMAC-WRTH (L = 2.87)

MCMAC-BENN (L = 2.58)

MCMAC-AMER (L = 2.29)

MCMAC-PCEL (L = 2.00)

MCMAC-RICH (L = 1.87)

MCMAC-SATX (L = 1.66)

MCMAC-LYFD (L = 1.53)

UT [hours]

BH

[nT

] (A

dju

ste

d B

ase

line

s)

Magnetogram 2006-06-19

1-day 2-hourLT = UT – 6.37 (hr)

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Slide 10

An Example of McMAC Measurements:FLR Frequency & Equatorial Density

12 15 18 21 24

40

45

50

55

60

65

70

UT [hours] (= LT+6.37)

CG

M L

atit

ud

e [d

eg

]

FLR Frequency (n = 1) [mHz]

10

20

30

40

50

60

70

12 15 18 21 24

2

3

4

5

6

7

8

UT [hours] (= LT+6.37)

L

log10

(Equatorial Density) [a.m.u./cm-3]

0.5

1

1.5

2

2.5

3

3.5

1622-1704 UT 2006-6-15 • Model-predicted plasmapause L (or Lpp) well agrees with FLR-inferred results.

• The low Lpp can be explained by the Kp value of 5+ earlier in the day

2006-6-15

40 50 60 700

0.01

0.02

0.03

0.04

0.05

0.06

CGM Latitude [deg]

FL

R F

req

ue

ncy

[mH

z]

2 4 6 810

0

101

102

103

104

L

log 1

0(neq)

[a.m

.u./c

m-3]

Lpp(model)

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Slide 11

McMAC Data Availability

(as of 5/16/07)

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Slide 12

McMAC Data DisseminationMcMAC Web Site: (http://spc.igpp.ucla.edu/mcmac/)• Project information• McMAC data files• Density estimation (in preparation)

NASA VMO (UCLA Hub –PI: Ray Walker)• To provide access to all McMAC data• Important in retrieving other space physics data for the same time intervals

Contact Peter Chi (pchi@igpp.ucla.edu) for details.

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Slide 13

IGPP-LANLand

SMALL Data

http://spc.igpp.ucla.edu/uclamag/data_center/

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Slide 14

• MEASURE (Magnetometers Along the Eastern Atlantic Seaboard for Undergraduate Research and Education ) magnetometer chain is distributed along the east cost of North American Continent.

• Data is available through : http://measure.igpp.ucla.edu

• PI is Mark Moldwin: mmoldwin@igpp.ucla.edu

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Slide 15

INTERMAGNET•The International Real-time Magnetic Observatory Network (INTERMAGNET) is distributed throughout:

• African/Indian Ocean

•Asia/Japan

•Europe

•Pacific Ocean/Australia/Antarctica

•South/North America

• Data is available in formats of ASCII and Binary files.

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Slide 16

Central Meridian of Substorm Current Wedgeis around Honolulu (Hon)

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Slide 17

Intermagnet Mid-latitude Stations Aug-29-2001