Space Research Institute Group: Applications of

GNSS Ionosphere-Atmosphere-Hydrosphere-Pedosphere-

Lithosphere G. Stangl (1) , C. Aichhorn, W. Hausleitner, S. Krauss, J. Weingrill (2)

(1) Federal Office of Metrology and Surveying

(2) Space Research Institute, Austrian Academy of Sciences

Ionosphere

Atmosphere Hydrosphere

Pedosphere

Lithosphere

Activities

Ionospheric ModellingTEC Maps in earthquake zones4D-Tomography

LEO AccelerometrySolar Activity Response to Earth AtmosphereZenith delays

Altimeter CalibrationTransponder Data AnalysisHeight Transfer

Slow landslidesPermafrost changesAlluvial movements

Earth-fixed reference framesCrustal movementsPlate boundariesGF Recovery from SLRTailored SW Strategies for large NEQ

Missions

GPS/GLONASSGalileoRegional TEC mapsDEMETER

CHAMPGRACE-A/BGOCEGPS, ECMWF, radiosondes

Jason-1Jason-2EnvisatCryosat-2

GMES TopoeuropeGGOSGMESCHAMP, GRACE-A/BGOCE

Project

OEGNOS (ASAP Proposal)PLEGGDEMETER

Atmosph. Evolution (FWF Proposal)

CALYPSO (FP7 Proposal)

Hazard zones in Central Europe (FP7 SSMP, CERGOP)

IGS, EUREF, Austria reference framesCERGOP, WEGENER (Eastern Med)HafelekarGOCOnAUT (ASAP Prop.)

Staff

Aichhorn (15%)Krauss (30%)Stangl (5%)Weingrill (30%)

Hausleitner (20%)Krauss (30%)

Hausleitner (25%)Weingrill (25%)

Aichhorn (10%)Krauss (10%)Stangl (10%)

•Aichhorn (75%)•Krauss (30%)•Stangl (85%)Hausleitner (25%)Höck (30%)

Co-operations

TU WienTeleConsult Austria, UniZentrum Rottenm.ROB (Bruxelles)SRI/EEP

Polar Geophys. Inst. (RU)IWF/Phys (Lammer)EUREF, EUMETNET

TU Chania (GR)11 Partners (F,D,USA,)

CEI countries, research institutionsBEV

European countries (offices, universities, etc)IAGSRI/Computer CentreSRI/AstrobiologyTU Graz

Members and Cooperations

3SRI orientation workshop 2008-09-08 Graz Mariatrost

Results Network Analysis Regional GNSS Data Centre for Europe (1 of 2) :350 Permanent

+ , stations campaign data comparable to all major DCs worldwide( , , , , , , , 200 -1500 )BKG CDDIS GSI JPL KASI SIO UNAVCO all stations

Transponder: campaigns on Gavdos, ENVISAT Altimeter Calibration RA-2 Bias: 40 ± 2.2 cm, Height Transfer Accuracy: 2.64 cm

Analysis Centre: Weekly analysis of 4 networks (50-90 stations each), rank 4 of 16 AC in Europe, + GNSS antenna radom field

( )tests BEV Vienna , Tunnel survey networks( , , )Innsbruck Koralpe Semmering

Products: Coordinates, covariance matrices, troposphere zenith delays, troposphere gradients, basis for realization of the Austrian and European reference frame, weather forecasting, time series, station velocities

4SRI orientation workshop 2008-09-08 Graz Mariatrost

Results Geokinematics Detection and Elimination of Offsets and

Outliers from weekly Time Series

Separate influences (equipment, atmosphere, hydrosphere, tectonics)

Generate velocity field

Look for geokinematic patterns (boundary zones, escapements etc) → geokinematical model

Compare to geological and and tectonic information → tectonic model

Earthquake at strike-slip fault – permanent offset

5SRI orientation workshop 2008-09-08 Graz Mariatrost

Results Modeling

Thermospheric Neutral Density during Solar Event: Density ratio of 3-4 of MSIS wrt.

CHAMP

Temperature increase up to 4000 K with new model

Regional TEC Maps

Near Real Time monitoring prototype

Detection of 3-10 cm outliers

Troposphere zenith delays and precipitation phase lag

Horizontal seasonal variations (atmosphere?)

LEO SLR Data Processing GPS orbit validation: <2 cm

Gravity field assessment methods

SWOT AnalysisStrengths Weaknesses

GNSS analysis since 1980, independent of occasional diploma and PhD theses

Leading contributions to international analysis and reference standards

Global services already installed and acknowledged

Multidisciplinary approach

Niche products (Transponder, kHz Laser)

Diminishing manpower since 2006, impact in international projects becomes smaller

Few modelling experience because of software and manpower missing, no students to assist research by diploma theses and PhDs

Old technology of sensors

High risk of failure with new models and products

Opportunities ThreatsExperience needed globally for precise positioning (references, standards, models)

Permanent and quick analysis improves reliability of products and helps to find new features ->real time earth monitoring

Regional networking within geosciences needed, combination of geosciences requested

To meet the future challenge, the ideal would be at least 1 person for orbit models, 2 persons for monitoring service, 1 person for earth models, 1 person for ionosphere models (and all are flexible)

Experience and competition grow by groups investing more into research

-> “poor little Austria” will be not needed anymore, experience gets lost without permanent service and “everyday analysis”

Future geodesy will end up as numerical mathematics for geosciences ->geometric part (references) will be reduced

Future Plans to 2013

2008 2009 2010 2011 2012 2013

GOCE Prel. Orbit Val. GOCE Grav. Field Validation

Gravity Field from SLR

Global Calibration Network Transponder/Altimeter

LEO Tailored Models

Regional modeling troposphere + ionosphere for positioning and natural disaster research

Combination studies geosciences (geodesy, geology, hydrology, meteorology, seismology) for earth surface movements (landslides, earthquakes, elastic deformation)

Natural disaster research (hazard zones)

4D-Ionosphere maps

Future Plans to 2013 cont‘d

2008 2009 2010 2011 2012 2013

High Rate (1Hz) and Near Real Time analysis 5 cm level: Station monitoring, weather forecasting, natural disaster research

Derivation of physical models at the 1 mm level (antennas, atmosphere, soil, crustal movements)

Geodynamic Modeling (=crustal movements + geological models)

Regional improvement of global reference systems (GLONASS, velocity field, seasonal variations)

Remain at the top of the international geodata infrastructure (GMES, GGOS): requires modernization of web services

Continuation of cooperation and setting of standards (IGS, EPN, CERGOP, BEV )

Outlook 2014-2020

2014 2015 2016 2017 2018 2019 2020

Transponder/Altimeter data assimilation, sea level changes, ocean currents

LEO model comparison, CME Data Base, model improvements for disturbed conditions

Combination studies geosciences (geodesy, geology, hydrology, meteorology, seismology) for earth surface movements (landslides, earthquakes, elastic deformation, permafrost, sediments)

Natural disaster research (hazard zones)

Near Real Time analysis 1cm level: Station monitoring, weather forecasting, natural disaster research

Geodynamic Modeling (strain fields, understanding earthquakes)

4D-Ionosphere maps

Global Earth Monitoring and References (GPS, GLONASS, Galileo, LEO, MEO)

THANK YOU!