THEMIS/ARTEMIS, Fall SWT 1 Sep. 14-16, 2011
ARTEMIS
THEMISMission accomplishments, status
Li et al. 2009GRL Cover
Bortnik et al.2008 Science
JGR special isssue on Substorms , 2011
GRL,Special Issue, 2008
Special Issue, 2008
PRL cover, 2009
TH-ATH/GBO
Nishimura et al.2010, Science
Halekas et al. 2010, SSRTao et al., 2011, JGR
Wiehle et al. 2011, JGR
AGU Geophys..Monogr. Ser. , 2012
THEMIS
ARTEMIS
THEMIS/ARTEMIS, Fall SWT 2 Sep. 14-16, 2011
THEMIS/ARTEMIS, Fall SWT 3 Sep. 14-16, 2011
ARTEMIS
THEMIS
Output• Number of publications per year steadily increasing
Source: http://themis.ssl.berkeley.edu/publications.shtml
THEMIS/ARTEMIS, Fall SWT 4 Sep. 14-16, 2011
ARTEMIS
THEMIS
Programmatics• Since Senior Review 2010:
THEMIS/ARTEMIS extended through 2014 Planetary Division has also endorsed ARTEMIS (w/ minimal funding) No new/revised contract with GSFC to account for the Science uptick Visiting scholars program in place (Quanqi Shi, Robert Michell, Marilia Samara) Next Senior Review in 2013 (bridge plus option contract planning has started). SST calibration issue is being remedied per Senior Review plans/recommendations:
Offloaded work from Davin who is busy on Maven, SP+ Performed calibrations and modeling at UCLA, cleanup software in place now (Drew Turner).
• THEMIS: a key player in the golden era of inner magnetosphere research Collaboration with RBSP (joint software with RBSP EFI/FGM, Key Params routines) Opportunity: Use White Sands 1 & Wallops (free) plus BGS (low cost) for 100% FS mode!!! Collaboration with TWINS, ERG, ORBITALS and ground (SD) teams under way
• ARTEMIS Lunar Orbit Insertions have occurred successfully on June 27 th –July 17th 2011 Planetary: LADEE conjunctions and crustal anomaly targets have been designed Instrument adjustments are under way
- Shadow despining software (local expert is Ferdinand Plaschke)- ESA/SST mode changes – will be magnetospheric only from now on
• Beyond 2014: MMS conjunctions with THEMIS and ARTEMIS Looking into orbit adjustments to line-up during MMS era – looking amazingly good!
THEMIS/ARTEMIS, Fall SWT 5 Sep. 14-16, 2011
ARTEMIS
THEMISPropagation of “bubble-like” jets fromreconnection site to near-Earth
Runov et al., 2009, 2010, 2011; Zhang et al., 2010; Li et al., 2011; Zhou et al., 2011 Curved flux tube Self-similar over global scales Low density Particle energization
~3 min 300 km/s
N V
V=velocity directionN=flux tube normal direction
THEMIS/ARTEMIS, Fall SWT 6 Sep. 14-16, 2011
ARTEMIS
THEMIS
(B) 8:18:54 UT
(C) 8:22:24 UT (D) 8:25:00 UT
(A) 8:14:54 UT
THEMIS All-sky imagers 2008-02-29
North-south arc
Poleward boundary
intensification
Arc contact and onset
Poleward expansion
Substorm macroscale interactions can beseen from the ground [Kepko/Nishimura/Lyons].
THEMIS GBOs linkReconnection andCurrent Disruption models
• Poleward boundary intensifications (enhanced magnetotail reconnection) supply fresh magnetotail lobe plasma to closed field lines.
• When the new plasma has low entropy, it reaches the near-Earth plasma sheet and triggers substorm expansion
• How are the dipolarization fronts interacting with each other and the inner magnetosphere?
• Interchange instability?• Deposition of energy?
Answers require both:• Kinetic exploration (FY10/11/12) and• Global exploration (FY13/14)
… of the equatorial magnetosphere inside of 12RE.
THEMIS/ARTEMIS, Fall SWT 7 Sep. 14-16, 2011
ARTEMIS
THEMISNon-substorm achievements: The originof pulsating aurora in the plasma sheet
Using coordinated satellite and ground-based all-sky observatories (GBOs) from the THEMIS mission, Nishimura et al. (Science, 2010) provide the first evidence that localized lower-band chorus waves observed at the equator, drive the pulsating aurora at a given pulsating patch in the ionosphere. The findings can also be used to constrain magnetic field models, an otherwise notoriously difficult task.
TH-ATH/GBO
THEMIS-A (P5) Magnetic Field
THEMIS-GBO ImagerAuroral and Chorus Intensity are correlated
THEMIS
ARTEMIS
THEMIS/ARTEMIS, Fall SWT 8 Sep. 14-16, 2011
Launch=2007-02-17
2007-03-23
2007-06-03
2007-07-15
2007-08-30
2007-12-04
XGSE
YGSE
TH-B
TH-C
TH-D
TH-E
TH-A
P1
P2
P3
P4
P5
First 10 months: Commissioning andCoast Phase Observations
THEMIS
ARTEMIS
THEMIS/ARTEMIS, Fall SWT 9 Sep. 14-16, 2011
Dayside 12008-08-08
XGSE
YGSE
First year THEMIS baseline orbit (FY08)
Dayside 22009-09-16
XGSE
YGSE
TH-B
TH-C
TH-D
TH-E
TH-A
P1
P2
P3
P4
P5 Second year baseline orbit (FY09)
Tail 12008-02-02
Tail 22009-02-18
Angelopoulos, 2008Space Sci. Rev.
THEMIS/ARTEMIS, Fall SWT 10 Sep. 14-16, 2011
ARTEMIS
THEMIS
THEMIS Extension (FY10,11,12)
THEMIS/ARTEMIS, Fall SWT 11 Sep. 14-16, 2011
ARTEMIS
THEMIS Electron beams accelerated byasymmetric wake potentialARTEMIS
ARTEMIS P1 electron spectra (a, b) and wake potential (c) inferred from them
Potential, V [Note: VC>VA>VB]
[Halekas et al., SSR, 2010]
THEMIS/ARTEMIS, Fall SWT 12 Sep. 14-16, 2011
ARTEMIS
THEMIS
ARTEMIS orbits
Note: P1 retrograde, and P2 prograde.
Relay conjunctions permit more monitoring time at periapsis, for periods of up to an hour.
Here P1 monitors the primary field while P2 measures the nightside induction field.
P1
P2
THEMIS/ARTEMIS, Fall SWT 13 Sep. 14-16, 2011
ARTEMIS
THEMIS ARTEMIS’s latest design satisfies LADEE conjunctions
THEMIS/ARTEMIS, Fall SWT 14 Sep. 14-16, 2011
ARTEMIS
THEMIS ARTEMIS’s design has optimized observations of crustal anomalies.
THEMIS/ARTEMIS, Fall SWT 15 Sep. 14-16, 2011
ARTEMIS
THEMISTHEMIS probe separations
2010-04-10 00:00:00
P3
P4
P5
X or -X
Z
FY 11/12
Tail or Dayside
Inner magnetosphere
2010-04-10 00:00:00
P3
P4
P5Z
FY 13/14
FY13: 4-8-12 hrs
FY14: 8-8-8 hrs
X or -X
P3
THEMIS/ARTEMIS, Fall SWT 16 Sep. 14-16, 2011
ARTEMIS
THEMIS
- Interaction of reconnection jet (or dipolarization front) with the inner
magnetosphere and its role in triggering substorms
P3
P3
P3
X
Z
P1Prime mission result: Reconnection starts first
FY 11/12 objective: Physics of reconnection-inner magnetosphere interaction
P2
intense waves
Jy ~ 100 nA/m2
Bz
(nT)
Bz
(nT)
Bz
(nT)
E(Hz)
elec
tron
s (f
)
30 keV
95 keV
P1P2P3
z
z
z
Jy
x
x
THEMIS Burst data
Runov et al. [2010]
P3P4
P5
Magnetotail from kinetic scales: FY11/12
THEMIS/ARTEMIS, Fall SWT 17 Sep. 14-16, 2011
ARTEMIS
THEMISThe Galaxy 15 knock-out:
AR-TH storm time conjunction
ART: P1
ART: P2THM:P3,4,5
ART: P1
ART: P2
THM: P3
THM: P4
THM: P5 Galaxy 15: damaged on Apr 5, 2010was only recovered on Apr 4, 2011
Connors et al., 2011 Ann. Geophys.
Connors et al., 2011 (Ann. Geophys.): GOES field over-dipolarized thanks to incoming flow bursts. How were particles accelerated? If only we had THEMIS in dispersed orbits, together RBSP there, we would now know!
THEMIS/ARTEMIS, Fall SWT 18 Sep. 14-16, 2011
ARTEMIS
THEMIS
- Cross-magnetotail width of reconnection and energetic particle injection regions
- Global evolution of energetic particle injections during substorms
3-6 RE
Magnetotail from global scales: FY13/14
THEMIS/ARTEMIS, Fall SWT 19 Sep. 14-16, 2011
ARTEMIS
THEMISMMS era (FY13/14): THEMIS observes RX drivers
2010-04-10 00:00:00
P3
P5
X or -X
Z
FY 14/15
MMS Phase2 or 1/3
P4
MMS
A tetrahedron within a tetrahedron
FY 15/16
P3P4
P5
MMS
P1
P2
Resonant orbits: alignments at solar max
X
Y
THEMIS/ARTEMIS, Fall SWT 20 Sep. 14-16, 2011
ARTEMIS
THEMISData Collection and Distribution
THEMIS GBOs
THEMIS/ARTEMIS PROBES
T-DASGround calibrationSoftware depositoryCDF and Cal. Files
MIRROREUROPE
MIRRORJAPAN
MIRRORTAIWAN
NASA(CDA, SSC)
Researcher
WWW
NOAA (GOES,SPIDR)
Indices(AE Index,Dst,Kp)
Ancillary GMAG (MACCS,Carisma,
Greenland, GIMA)
RBSP (EFI/FGM, others: Kp)
ERG
SuperDARN(GOES,SPIDR)
THEMIS/ARTEMIS, Fall SWT 21 Sep. 14-16, 2011
ARTEMIS
THEMIS
Backup slides
THEMIS
ARTEMIS
THEMIS/ARTEMIS, Fall SWT 22 Sep. 14-16, 2011
Data Processing and Community Support
• All data/plots available, calibrated 1 day after downlink (http://sprg.ssl.berkeley.edu)• Routine data distribution in 4 ways
– CDF downloads from SPDF, UCB, 4 mirror sites– HTTP and FTP socket connection through software (seemless)– Bundled downloads via UCB site (per instrument, spacecraft, product)– On-line at VMOs, and PDS (data is SPASE compatible).
• Free, powerful software distribution, on-line docs, tutorials– IDL-based, platform independent– Community demos biannually at GEM meetings + trainings on demand
• On-line Support ([email protected])• SVN configuraton-controlled: distributed, grass-roots effort• Community training sessions twice a year (GEM and AGU)
THEMIS/ARTEMIS, Fall SWT 23 Sep. 14-16, 2011
ARTEMIS
THEMISTHEMIS Software
Top Related