Recent Progress of China Tri-dimensional Observation Experimentation: Seismo-

Electromagnetic Satellite and Ground-based Seismo-Ionospheric precursors Monitoring

Network

SHEN XuhuiExpert Working Group of Seismo-Electromagnetic Satellite Project, CEA

Project Office of Earthquake-related Satellite, CEALab. For earthquake observation from Space, IES, CEA

Special Session “New Methodologies for Monitoring Major Earthquakes from Satellite and Terrestrial Observations”, IDRC2009

OUTLINE

• Preface• China Seismo-Electromagnetic Satellite• China Experimental Network for Seismo-

Ionospheric Disturbance Monitoring• Upcoming Tasks

Above allAbove all,, shift from a culture of shift from a culture of reaction to a culture of prevention. reaction to a culture of prevention. Prevention is not only more human than Prevention is not only more human than cure, it is also much cheaper.cure, it is also much cheaper.

1999. Mr. Anna Former General Secretary of 1999. Mr. Anna Former General Secretary of UNUN

Hypocenter distribution 1997-2001 with magnitude larger than 7.8

Pacific Ocean

Eurasia

Africa

North America

South America

Earthquake prevention and disaster mitigation is one of the comEarthquake prevention and disaster mitigation is one of the common courses of mon courses of humanhuman--being in the world.being in the world.

It is not only a scientific problem but also sociological problem which makes power influence to Safe and Secure Society and Sustainable Society.

Global Seismic Belts and Chinese seismic Area

One World, One Dream

When to Break through the Scientific Problem for Earthquake Prediction?

? ? ? ?

SurmarizingSurmarizing the Case Study of the Case Study of

5.12 5.12 WenchuanWenchuan Great EarthquakeGreat Earthquake

After the great Earthquake, Space After the great Earthquake, Space Techniques help disaster monitoring Techniques help disaster monitoring

and emergency responseand emergency response

• Eathquake Disaster status analysis and assessment• Traffic controlling and Succor Programming • Quickly creating of Intensity distribution map• Surface Rupture and Seismotectonic mapping• ……

• SAR images help disaster monitoring while bad weather

• IR Images help disaster monitoring while in nighttime

Restropect the main phenomena including few days before the

Wenchuan Great event

• local TEC and f0F2 going up together• magnetic emitting power spectrum going up

magnetic Conjugate point disturbance• in-situ electron content down• together with ionic H+ content going up and O+

content down• OLR abnormal• ……

• Ground Seismo-electromagnetism monitoring– Geomagnetic field– Geoelectrical field– LF wave emission– Geoelectrical resistance changing– ……

• Ground-based Ionospheric disturdance monitoring– Electrical field in the atmosphere– Total Electronic content TEC– Critical frequence f0F2– Neutron monitoring– ……

• Satellite-based Ionospheric disturdance monitoring– Geomagnetic field– Electrical field in the atmosphere– LF wave emission• Total Electronic content TEC • Electron and Ion content• Electron and Ion temperature• Energetic particle flux• ……

Existed Ground-based EM network

New Ground-based Ionosphericmonitoring network

New Mission for EM satellite

1st China Seismo-Electromagnetic Satellite

• Stage A: Feb.,2003- Oct.,2005,Earthquake-related satellite plan demonstration

• Stage B: Nov.2005-March,2008,Seismo-electromagnetic satellite demonstration

• Stage C: April 2008- Integrated technological and Financial Demonstrating for 1st CSES

• Stage D: Satellite system development• Stage E: Satellite Launching and Operating

We are waiting We are waiting here here uptoupto presentpresent

• “The General requirement for Spacecraft Developing”, overpass the licensing

• “The Integrated technological and Financial Demonstrating for 1st CSES” overpass the licensing

• In the following,“The General requirement for Satellite system

Developing”,“The Integrated technological and Financial

Demonstrating for Satellite system ”

To surpass 5%=100keVElectron flux

To surpass 5%1.5MeV~ 200MeVProton fluxHigh-energetic particles

O+, H+, He+Ionic Components

Orbital orientation:50ms- 1

Lateral orientation: 20 ms- 1

—Drift velocity

To surpass 10%500~10000KElectron temperature

To surpass 10%102~107cm-3Electron density

To surpass 10%500~10000KIonic temperature

To surpass 10%102~107cm-3Ionic density

To surpass 10%—TEC and Ne

Ionosphericplasma

1.0uV/ mDC- 10MHzElectrical intensity

1.0nTDC- 20kHzMagnetic field intensity Electromagnetic field and wave

Precision or resolutionFrequency or scale

Physical parameterDetection content

Physical parameters to be observatived and its precision

150,450,1066MHzIonospheric Electron Density ProfileThreeFrequenceTransmitter

=100keVElectron flux

1.5MeV~ 200MeVProton fluxEnergetic Particle Detector

500~10000KElectron temperature

102~107cm-3Electron densityLangmuir probe

Ion velocity

Ion components

500~10000KIon temperature

102~107cm-3Ion density

Plasma Analysis

Ionospheric TEC; Electron density Ne and Profile

GPS receiver

DC- 10Hz3 components of magnetic fieldfluxgate magnetometer

DC- 10MHz3 components of electric fieldElectric field detector

10Hz- 20kHz3 components of magnetic fieldSearch coil magnetometer

SpecificationPhysical parameterPayloads

Payload Assembled in 1st CSES satellite

Orbit Parameters of CSESOrbit Parameters of CSES

Pointing accuracy: ± 0.1°;Triaxial stability: ±0.01°/s(3s)Attitude control

Circular polar orbitStyle of orbit

Real-time orbit determination:superior than ± 100m;

Not real-time orbit determination:superior than ± 50cm

Measurement precision of orbit

13:30pmLocal time of descending node

5Revisiting period (day)

97.3Period (min)

97.9°Inclination (deg)

500Altitude (Km)

Primary design of the platformPrimary design of the platform

X-band radio frequency transmit system, downlink data rate: 66Mbps Power: 20W

Data Transmission

70GbitData Storage on Board>3 years

Attitude Stabilization

Pointing Accuracy

three-axis earth-pointing stabilization

EOL(End of Life)

BOL(Beginning of Life)

Total

Platform

Payload

Total

Platform Module

Payload Module

Life Time

<=0.01deg/s

<=0.1 degattitude & orbit control system

300W

350Welectric power supply

270W

150W

120W

Power Budget (@28V)

400kg

300kgMass Budget100kg

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GPS/BDGPS/BD--22

GPSGPS? ? ?? ? ?

GPSGPS? ?? ?COSMOSCOSMOS? ?? ?

? ? ??? ? ?? //TBBTBB

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OLR/TBB& SHFOLR/TBB& SHF

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DEMETERDEMETER?? ???? ??

TEC/fTEC/fOOFF22

China Experimental Network for China Experimental Network for SeismoSeismo--IonosphericIonospheric Disturbance MonitoringDisturbance Monitoring

• Being the tryout and parallel program of CSES,

• put in practice just after 5.12 WenchuanGreat Earthquake

Scientific Objectives

• To study and summarize the temporal-spatial character about earthquake related ionospheric disturbance;

• To develop the real time monitoring system for seismo-ionospheric disturbance;

• To establish seismo-ionospheric monitoring network with high resolution and run after the earthquake situation.

main contents

• Conforming and interlinking the existing GPS stations and Ionosounding stations with vertical working mode;

• Constructing 20 Ionosounding stations with slant working mode;

• Constructing 10-20 ground and atmospheric electric field stations together with EM wave stations;

• Constructing the network center.

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Distrubution Map of Ground-based Ionosounding Stations in North China

Existed Station with vertical mode

New station with slant mode

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The monitoring and Controlling System in Data center

Progress

• the 20 Ionosounding stations with slant mode were constructed,

• about 9 VLF EM wave probers are stocking; • Existing GPS stations are linked with the

network center According to the scenario of this network

• the working group will begin and stand the research activity together with DEMETER, Cosmic and IR data.

Upcoming tasks • 1. It is said that CSES will end its financial and

technological demonstration this year, and is due to come into Engineering Developing phase in middle of 2010 and be launched in the end of 2012

• 2. The ground-based Seismo-Ionospheric PrecorsorsMonitoring Experimental network has finished his 1st phase construction and will be in operation 10 years following developing

• 3 Up to now, InSAR, IR and EM were used in quake monitoring and got helpful and interesting results,Multi-parameters and multi-platforms observation system will be developed step by step.

The Methodology Research on Earthquake Monitoring and predicting

from Space (2008-2010)• Sub 1 Space-based EM Observation and

Earthquake-related information processing• Sub 2 Seismo-Ionospheric Plasma and charged

particles disturbance Monitoring and data processing• Sub 3 Infra-remote Sensing Application in

Earthquake Monitoring• Sub 4 Earth surface deformation monitoring by D-

InSAR technology• Sub 5 Integrated research on Seismo-RS Information

Mechanism, Data Fusing and Applications

RS demonstrating application in Earthquake Monitoring and Disaster

Response(2009-2015)• Sub 1 methodology research on RS

Application in Seismotectonics• Sub 2 Methodology research on RS

Application in Earthquake Monitoring• Sub 3 Methodology research on RS

Application in Earthquake Disaster Response• Sub 4 Integrated RS Demonstrating

Application in Earthquake Science

Proposals

• A Multi-lateral annually workshop focusing on Earthquake Observation from Space

• Visiting or Guest Professors are welcome

• Exchanging Scholars each other