Geohazard Super SitesConcept & ESA Trial

• Geohazard objectives / requirements• GEO Geohazard Members• What is a Super Site?• “Super Site” Concept • ESA Virtual Archive trial supporting Super Sites

Wolfgang LengertERS & ADM Aeolus Missions Manager

Objective of Geohazard initiative

•Formal Requirement:task DI-09-01 (Supersites) towards GEO for the new 2009-11 GEO workplan:

… is to respond to the scientific and operational geospatial information needs for the prediction and monitoring of geological hazards, namely earthquakes, tsunamis, volcanoes and land instability.

•Informal Requirement:Geohazard community: stated in workshops, Cat1 reports, …

GEO Geohazards members are: http://www.igosgeohazards.org/

• United Nations Educational, Scientific and Cultural Organization, UNESCO• European Space Agency, ESA• Japanese Space Agency, JAXA• National Aeronautics and Space Administration, NASA• French Space Agency, CNES• United States Geological Survey, USGS• British Geological Survey, BGS• French Geological Survey, BRGM• Federation of Digital Seismological Networks, FDSN• World Organization of Volcanoes Observatories, WOVO• Global Geodetic Observing System, GGOS• International Consortium on Landslides, ICL• International Association of Seismology and Physics of the Earth's Interior , IASPE• International Union of Geological Sciences, IUG• Committee on Earth Observation Satellites (CEOS), CEOS• Association of the Geological Surveys of the European Union, EUROGEOSURVEYS

What is a “Super Site”?

stimulating access to data regionally to “Geohazards Natural Laboratory” :

…. facilitating access to data over a certain number of regional areas. In order to be eligible as a “Supersite” a regional area should meet at least one of the following criteria:

• populations and elements are exposed to geological threats

• an event is expected to occur in the near future, or a slow process is already ongoing

• it should be an appropriate place to stimulate basic geohazard research (earthquakes hazards, landslides, volcanoes, hydro-geological processes) and relative sea level rise

Relevant “Super Site” data set

EarthquakeSeismic monitoring

TopographySoil behaviorHydrogeology

VolcanoTopography

Seismic monitoringDeformation

Gases

Ground InstabilityTopographyDeformation

Hydrogeology

BoreholesGeological structure

InSAR imagesSeismologicalstations

Geo-referenced data

GPS

+ TsunamiTopographyBathymetry

Seismic monitoringBuoys…

IGOS Geo-hazard executive bureau(long term existence tbc.)

ESA SAR • Specific archive (SARL0 or/and SLC)• Fixed data set• Data regularly added after acquisition

• Standing order to feed specific archive • No NRT

• Hosted by ESA • Fixed sites e.g. Izmit, Etna

• Data cost of reproduction – paid once

• Searchable catalogue

other SARSpecific archive

In-situ data (e.g. GPS)

• EOLI- SA catalogues & download• No tasking

• Project selection (Cat1)• Registration• Compile results• Make recommendations for new data set

““Geo hazard Super Site” conceptGeo hazard Super Site” concept

vuseruser

user

other SARSpecific archiveother SAR

Specific archive

Currently available ESA “Super Sites” SAR data

Super Sites (ESA SAR scenes available) Hawaii (250) Etna    (250) Vesuvius (400) Los Angeles (100) North Anatolian fault (20 Istanbul plus east of Istanbul) Tokyo

Natural Geohazard Laboratory (potential future Super Sites)• Iceland (earthquakes and volcanoes)• Sakurajima, Miyake-Jima• East-African rift  earthquakes and volcanoes• Yellowstone• Piton de la Fournaise (Reunion)• San Francisco

ESA “Super Site” Archive has mainly been established with ESA SAR data being provided by users

UNAVCO has provided technical support

1 mission across 3 satellites

Combination of:

• EOLI

• Quicklooks at ESA catalogue

• Virtual Archive; SAR products stored Close to the user (Europe, North America, Asia)

Geohazard “Super Site” Trial

Example of Cloud ComputingTrial starts now (once

Cat1 has been issued) and lasts until April

2009

Virtual Product ArchiveDownload performance

• 12.20 PM started download of several products in parallel

• 12.23 / 24 PM download finished after 4 minutes (ESRIN office)

Review => to make service operational

End of this year an ESA review on this service will take place

Evaluation of service with following criteria:

– user satisfaction– cost– GS compatibility– .....

Summary

• “Super Site” ESA SAR data are via GeoHazard Cat1 project easily and fast downloadable using EOLI.

• The “Super User” Archive has very well been initialized based on users have contribution. ESA has provided the infrastructure and is the data distributor.

• Trial starts now and ends April 2009 feedback and recommendations are important to evaluate and tune the “Super Site” service.