Overview of ERG / ERG Science Center Overview of ERG / ERG Science Center Y. Miyoshi, K. Seki, T. Hori, Y. Miyashita, T. Segawa, Y. Ebihara, T. Takada,

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Presentation transcript:

Overview of ERG / ERG Science Center Overview of ERG / ERG 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, 2010 ERG-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-science-center

1. The ERG project 1. The ERG 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 -satellite ERG -ground networks ERG Project Group IN-SITU OBSERVATION Science Coordination Team Project Science Center NUMERICAL SIMULATION/MODELING ERG -simulation/integrated studies

The ERG satellite ・ apogee altitude ： 4.0 Re (L~5) ・ perigee altitude: 300 km ・ inclination: 10/31 deg ・ planned launch date: ～ FY

plasmasphere ring current plasma sheet inner beltouter belt 1 eV 100 keV 1 MeV Science Instruments of the ERG satellite : plasma & particles LEP-i MEP-i 1 keV LEP-e MEP-e HEP-e XEP 10 MeV PPE: Plasma and Particle Experiment (PI: M. Hirahara) ionelectron - 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) Convective Field PWE Magnetic Field 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) magnetosonic wave (~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 ERG ground networks (PI: K. Shiokawa)

The ERG 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 interaction and 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 University starts the new modeling/integrated study project : GEMSIS. micro simulation Katoh and Omura [2007]

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 fleet of geospace satellites Launch : 2012 US/RBSP Canada/ORBITALS Japan/ ERG Launch : 2013 US/THEMIS

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

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 FY ・ 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 (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.