D5-PM2, ST17-A001, AOGS, Taipei, August 12, 2011

Update on MAGDAS Activities inAsia-Oceania Around Globe
during ISWIK. Yumoto and MAGDAS/CPMN GroupSpace Environment Research Center, Kyushu Univ.

1. Scientific Objectives
2. Update on MAGDAS Activities in 2010-2011
3. Update on Scientific Results by MAGDAS
4. Future Plan of MAGDAS
5. Summary

1. The ScientificObjective ofMAGDAS

1/17

SUN
Interplanetary Field B
S WindVa)a) Solar
Solar Radiation
Radiation
Ionization
Ionization byby EUV,EUV, X-rayX-ray

1) Sun-Earth Couplinga) Solar Radiation
Energy~1012 MWb) Solar Wind Energy
104 -107 MWc) Cosmic Ray Effect on
Atmospheric Cloud2) Iono-AtmosphereLithosphere Coupling!"#"$%&'()*+,"#-.*/0)12+3+!"#"$%&'()*+,"#-.*/0)12+3+

Magnetosphereb) Solar Wind
Earth’sMag. F.

IonosphericCurrent

Ionosphere4)-56+7)#-+
Atmos.

89+
Lithos.

InducedCurrentEarth
2/17

2. Update on MAGDAS Activities in 2010
: MAGDAS-9Installation

1. SERC Sub-center at Manila Obs.
2. Re-installation of New MAG-9

3/17

20/50
MAGDAS-9 magnetometer2.1. SERC Subcenter at Manila Observatory
in Philippines for MAGDAS Project
4.:.':5(5"+;5#)65+<=$'(051"(2>+?;,@++ABCD,+B.=*'#1'(E++F':5$%)+;.#/#6.%5+,'=.+,5:525#++-'+<("+G505"+

March 9, 2011

;HIGHB+!#$1566'-+
D'*'#162+)#$1566'-++
http://www.filipinolanguagemelbourne.org.au/philippines_map.html

4/17

2.2. Installation of New MAGDAS-9 Magnetometer・ Sensor + 7 m cable; 2.9 kg + 1.7 kg
・ Amplifier; 2.9 kg
・ 70 m cable; 4.5 kg
・ GPS antenna + cable; 0.85kg
・ Data Logger; 2.6 kg------------------------------------------Total
15.5 kg・ (H,D,Z,F)-comp magnetic fields,±70,000nT,0.01nT, 2 tilt meter, 0.1”; 32bits
250Hz sampling, 10Hz, 1Hz averaged data
・ Temperatures at sensor and amplifier;0.01℃
24 bits 10Hz sampling・ Power consumption; 12Vx400mA・ Data card; 2 Gbyte, 10Hz data logging
5/17

2.2.2 Re-Installation of MAG-9 at DAW,
Australia, Nov. 13-17, 2010
Pre-amp Hut

Sensor Hut

SensorGPS

Dr. Robert EagerResearcher
CSIRO Ecosystem SciencesMr. Jimmy Chan
Darwin IT Support

Data Logger
6/17

2.2.3 Re-Installation of MAG-9
at HLN, Taiwan, Jan. 25-28, 2011
Sensor Hut

SensorGPS."/0#$1*23*4'"（劉正彦）$5*4&'"$)2,&/"*,6$7'"8/($Pre-amp Hut

Data Logger

Pre-Amp!"#$%&'(（陳盛文）$!)*($+)*(,'()(-'!"#$1*2$9:'-,"/(*-8

Data Logger Hut

Data Transmitter House

7/17

2.2.4 Re-Installation of MAG-9 at CEBPhilippines, March 3-6, 2011<'(8/"$&2,1/44'"$&2,Sensor."';)+7#$&2,="#$>/:)(?$9+'"*,/$<#$@,)?/6

!"#$9"A*($B#$@"/8-/E)D'"6Pre-Amp."';)+7#$&2,=),)$:/44'"C$3")(8+*D'" 8/17

2.2.5 Re-Installation of MAG-9 at AMA, Japan
March 25-27, 2011
F.<

G515+F"::'(N+4(5#$L)O'(B'#$"(B'#$"(+M.1

J('KHL%
J('KHL%+M.1
9/17

3. Modeling of Sq by MAGDAS・Analysis Period:
1996 - 2007

210MM
Sq Ionospheric Current

・Magnetic Quiet
Days:
Kp!2+・21 Stations:(Yumoto etal., 2001)
・Hourly Value ofHorizontal Sq
Amplitude:
10/17

3.2 Empirical Sq Model by fitting LeastSquares Method
1. Solar Activity (SA)
2. Day of Year (DOY)
3. Local Time (LT)

4. Lunar Age (LA)S = !(dj – Xj(tj))2, where X(tj)=F・G・H・I
dj : observed values, Xj(tj): empirical model
(See Yamazaki et al., J. Geophys. Res., 2011, in press)

11/17

3.3 Relationship between Sq andEEJ in the 210 MM Region

Sq=BG$

・EEJ strength is controlled not
only by ‘intensity’ of the Sq
current system, but also by‘shape’ of the Sq current system.

EEJ (DAV) [nT]!

EEJ (DAV) [nT]!

(Yamazaki et al., 2011, submitted)

Sq Current Intensity [kA]!

Sq-focus distance [Deg.]!
12/17

Observed EEJ (nT)

3.4 Relationship between the Observed EEJ and
Estimated EEJ by Sq Current Pattern: Observed EEJ at DAV: Estimated EEJ at DAV
by Sq current patternf =(Jtotal+76)(-0.007dNS+0.82)(Yamazaki et al., 2011, submitted)
13/17

Estimated EEJ (f)3.5 New Decomposition of EEJ Amplitude at Equator
!"BH%

#$$%&
#$$%

,CP

#$$%： ()*+,&-&$./0&&10&$1)2&3014*!&#$$%：567&819:&&&&&&&&&&&&&1;<=1><8&#$$%&&&&&&&&&&!"#$%&'"($)*$+,+-"!"#$$%&'#$$%

CCP+'#$$%?&#$$%&:&#$$%&!"./+012$%&'"($)*$+,+- ,CP+B'L)K-).(#56+14/16Temp. [K] at 90°

3.6 Sudden Stratospheric Warming (SSW) and EEJ & Sq ・"H (each STA) ＝ H (each STA)
– H (each STA)

at 40km alt.

・EEJ (DAV) enhancement in themorning and depression in theafternoon at the dip equator.

at 30km alt.

(Yamazaki et al., 2011, submitted)

Solar Local Time [hr]・Quaternary-vortex structurein the northern and southernhemisphere during SSW.

F10.7[s.f.u.]

Kp Index

Lunar age

15/17

4. Space Environment Observations
by MAGDAS and QZSXYB+<(=)1+

地理 緯 度II+F5/1.-'+

Q+

X.5$)KY'#)1&++B51'66)1'+

４

XYB+
KAG+

EWA

XYB+<(=)1ETS-8+

Z+C5(1&+D5-).$+

H6/1.-'：+QRNSSSTL+
B2#*&("#".$++<(=)1+F5.#*&>++
B'%1U+VVN+WSVS+

C4BK[!!!

MAGDAS, SERC, Kyushu Univ.



地理経度II+F"#:)1.-'+

Synchronous Orbit）

16/17

Update on MAGDAS Activities
Around the Globe during ISWI
5. Summary(1) Update on MAGDAS activities in 2010-2011
1) A new Sub-center at Manila Observatory to deploy more
dense MAGDAS array in Philippines.
2) SERC re-installed new MAGDAS-9 magnetometers nearequator in Africa, and along the 210 MM.
(2) Update on scientific results$by MAGDAS/CPMN
3) The good correlation between EEJ at DAV and Sq current
intensity and pattern.
4) We can evaluate the EEJ amplitude by using the observed Sq
current intensity and Sq-focus distance.
5) The anomalous enhancement of the Luni-solar semi-diurnal
variation (EEJ, CEJ) is related with Sudden StratosphericWarming (SSW), showing a quaternary-vortex structure.
(3) New deployment for coordinated MAGDAS-QZS observations
MAGDAS: http://www.serc.kyushu-u.ac.jp/magdas/index.html
ISWI: http://www.iswi-secretariat.org/

17/17