Overview of Overview of ERG / ERG ERG / ERG Science Center Science Center

Y. Miyoshi, K. Seki, T. Hori, Y. Miyashita, T. Segawa, Y. Ebihara, T. Takada,K. Shiokawa and ERG-science center task team

March 18-19, 2010ERG-THEMIS-ORBITALS Potential Use of TDAS

OUTLINE: ERG project Framework of ERG-SC Current status - an example of user developed TDAS - CDF’lization of SuperDARN radar (Dr. Hori) - CDF’lization of geomag data (Dr. Miyashita)

Contact; ERG-project office erg_adm@st4a.stelab.nagoya-u.ac.jp ERG-science-center erg-sc-core@st4a.stelab.nagoya-u.ac.jp

1. The 1. The ERGERG project project

project goal – understanding cross-energy couplings for generation and loss process of relativistic particles & variation of geospace during space storms

Target 1: Dynamics of the radiation belts particle acceleration, transportation and loss

Target 2: Dynamics of the space storms ring current and electro-magnetic field variation associated with M-I coupling

Target 3: Dynamics of the plasmasphere

REMOTE SENSING

ERG-satelliteERG-ground networks

ERGERG Project Group Project Group

IN-SITU OBSERVATION

Science Coordination TeamProject Science Center

NUMERICAL SIMULATION/MODELING

ERG-simulation/integrated studies

The The ERGERG satellite satellite

・ apogee altitude ：　 4.0 Re (L~5) ・ perigee altitude: 300 km・ inclination: 10/31 deg・ planned launch date: 　～ FY2013-2015

plasmasphere

ring currentplasma sheet

inner belt outer belt

1 eV

100 keV

1 MeV

Science Instruments of the ERG satellite : plasma & particles

LEP-i

MEP-i

1 keVLEP-e

MEP-e

HEP-e

XEP

10 MeV

PPE: Plasma and Particle Experiment (PI: M. Hirahara)

ion electron

- ERG/ PPE measure widely differing energies over 6 orders with ion mass discrimination.

DC

1 Hz

1 kHz

Science Instruments of the ERG satellite : fields & waves

Whistler(~kHz)

ULF waves(~mHz)

ConvectiveField

PWE

MagneticField

1mHz MGF(fluxgate)

PWE(search coil)

10 kHz

PWE: Plasma Wave and Electric Field Experiment (PI: Y. Kasaba)MGF: Measurement of Geomagnetic Field (PI: A. Matsuoka)

electric field magnetic field

- ERG/ PWE and MGF measure electric and magnetic field for wide frequency range from DC to MHz.

EMIC(~Hz)

magnetosonicwave

(~100Hz)

100 kHz

・ Magnetometer Network ： MAGDAS/CPMN, Silk-Road, Antarctic Network, ULTIMA

・ Radar Network: SuperDARN network, FM-CW radar

- Global convection pattern - ULF pulsation - Electric field penetration

- Global magnetic field variation- Remote sensing of ring current- diagnostics of plasmasphere

・ Optical Imager Network ： Canada, Norway, Siberia, Antarctica

- Estimation of ionospheric conductivity- Visualization of magnetospheric plasma distribution

The The ERGERG ground networks (PI: K. Shiokawa) ground networks (PI: K. Shiokawa)

The The ERGERG simulation/integrated studies (PI: K. Seki) simulation/integrated studies (PI: K. Seki)

・ simulation/integrated studies

global simulation of the radiation belts Miyoshi et al. [2006]

Comprehensive simulations including both micro wave-particle interactionand macro processes, which can be compared with the observations, are necessary for the ERG project.

As one of the activity of the simulation/integrated studies, Nagoya Universitystarts the new modeling/integrated study project : GEMSIS.

micro simulation Katoh and Omura [2007]

Science Coordination Team/Project Science Center Science Coordination Team/Project Science Center

・ Project Science Center (Lead: K. Seki)

・ Science Coordination Team (Lead: Y. Miyoshi)

-Planning and coordination of science program.

-Making an arrangement of the international collaborations.

- We are developing of a software package to analyze observations and modeling based on IDL/TDAS.

-Related observation database in commonly used format like CDF will be implemented.

International Collaboration: International Collaboration: international fleet of geospace satellites international fleet of geospace satellites

Launch : 2012

Launch : 2012

US/RBSPUS/RBSP

Canada/ORBITALSCanada/ORBITALS

Japan/Japan/ERGERG

Launch : 2013

US/THEMISUS/THEMIS

International Collaboration: International Collaboration: ground networksground networks

SuperDARN: SuperDARN: world wide HF radar network convective electric fields/MHD pulsations 8 new radars are developed in the sub-auroral latitude by 2012.

ULTIMA: ULTIMA: world wide consortium of magnetometer networks

THEMIS-GBO: THEMIS-GBO: systematic observations of ASI, magnetometers at auroral and sub-auroral latitudes.

CARISMA: CARISMA: magnetometer elements of Canada

ERG Science Center

ERG Science Center

ERG Science Center

Task definition

　　 * archive of ERG-project data (satellite, ground observations, simulation) and

related data.

* schedule control for archive and release of Level-2 data

* development and release of the data-analysis tool based on TDAS

to facilitate integrated analysis of several kinds of data provided from

the project .

Team member K. Seki (Ld.), Y. Miyoshi (Sci. Mgr), T. Hori (HF-radar Ld.), Y. Miyashita (Geomag Ld.),

T. Segawa, Y. Ebihara, K. Shiokawa (PI: ERG-ground nework), N. Nishitani (PI: HOK radar)

T. Takada, K. Asamura (Co-I: ERG PPE), Y. Kasaba (PI: ERG PWE), Kumamoto

(Co-I: ERG PWE), A. Matsuoka (PI: ERG MGF), M. Nose (Kyoto Univ. WDC),

I. Shinohara (JAXA), K. Murata, T. Nagatsuma (NICT), H. Kawano (Kyushu Univ.),

A. Yukimatsu, Y. Tanaka (NIPR)

ERG Science Center

　 Framework of ERG-SC

ERG – Science Center (STELab, Nagoya univ.)

Universities, Institute

ERG-satellite ERG-ground

ERG-modeling

Data Server

User

Integrated Analysis Tool (TDAS)

ERG Science Center

Universities, Institute

ERG project

・ The data of ERG-satellite will be archived in JAXA.・ The ERG-science center that archives all kind of project data is installed in STELab and develops the integrated analysis tool based on TDAS.

　 Collaboration with other projects in Japan

ERG – Science Center (STELab, Nagoya univ.)

Universities, Institute

ERG-satellite ERG-ground

ERG-modeling

ERG Science Center

Universities, Institute

ERG project

- IUGONET is Inter-university project that develops the meta-data server of related ground-based data.- ERG-SC cooperates with the IUGONET to develop CDF-format, data-analysis tool.

- NICT has developed “OneSpaceNet” project that maintains IT resources such as WS, data server and networks for the study of geospace. - “OneSpaceNet” is one of candidates for backbone of IT architecture for ERG-SC.

FY 2009.

FY 2008.・ discussions with THEMIS, ORBITALS, RBSP, Resonance, KuaFu missions about the possible collaboration for development of data-analysis tool at the ISAS symposium.・ investigation of data analysis tools. The task-team has selected TDAS as a possible data analysis tool for the ERG-project.

・ Development of CDF as well as load procedures for gmag and HF radar has been started.

・ Agreement of cooperation with IUGONET, NICT, etc. ・ The ERG-science center has been selected for a institute project

of STELab.

ERG Science Center

Timeline

FY 2010- (TBD) ・ We have a plan for development of both CDF and load procedures for ASI,

VLF, riometer as well as simulation/modeling data for pre-launch effort. ・ Some of data will be opened for public after confirmations by PIs.