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Geodetic data assimilation: Forecasting Deformation with InSAR

Total Cost €


EC-Contrib. €






 GEO-4D project word cloud

Explore the words cloud of the GEO-4D project. It provides you a very rough idea of what is the project "GEO-4D" about.

spatial    size    regions    energy    question    paradigm    series    controls    return    locked    designed    continuous    wealth    detect    earthquakes    mapping    light    temporal    validation    deforming    characterization    ground    provides    scales    faults    launch    algorithm    phenomena    instrumented    forecasting    usa    constellation    active    gps    data    machine    obscured    more    global    catastrophic    opportunity    changer    geodetic    mechanism    suggest    deformation    andreas    recent    first    outputs    valley    deploy    assimilation    radar    systematic    re    detection    anatolian    naf    period    gently    physical    toward    expand    answering    classic    rupture    fundamental    slip    taiwan    world    classified    compare    meet    intensive    turkey    shift    generate    release    actively    motion    north    releasing    events    variety    dynamic    groups    modes    aseismically    day    sentinel    space    shedding    longitudinal    san    continental    view    time    seismic    fault    tool    learning    tectonic    game    creeping    prone    types    stress    network    aseismic   

Project "GEO-4D" data sheet

The following table provides information about the project.


Organization address
address: 45, RUE D'ULM
city: PARIS CEDEX 05
postcode: 75230

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 1˙499˙125 €
 EC max contribution 1˙499˙125 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-01-01   to  2022-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    ECOLE NORMALE SUPERIEURE FR (PARIS CEDEX 05) coordinator 1˙499˙125.00


 Project objective

Recent space-based geodetic measurements of ground deformation suggest a paradigm shift is required in our understanding of the behaviour of active tectonic faults. The classic view of faults classified in two groups – the locked faults prone to generate earthquakes and the creeping faults releasing stress through continuous aseismic slip – is now obscured by more and more studies shedding light on a wide variety of seismic and aseismic slip events of variable duration and size. What physical mechanism controls whether a tectonic fault will generate a dynamic, catastrophic rupture or gently release energy aseismically? Answering such a fundamental question requires a tool for systematic and global detection of all modes of slip along active faults. The launch of the Sentinel 1 constellation is a game changer as it provides, from now on, systematic Radar mapping of all actively deforming regions in the world with a 6-day return period. Such wealth of data represents an opportunity as well as a challenge we need to meet today. In order to expand the detection and characterization of all slip events to a global scale, I will develop a tool based on machine learning procedures merging the detection capabilities of all data types, including Sentinel 1 data, to build time series of ground motion. The first step is the development of a geodetic data assimilation method with forecasting ability toward the first re-analysis of active fault motion and tectonic phenomena. The second step is a validation of the method on three faults, including the well-instrumented San Andreas (USA) and Longitudinal Valley faults (Taiwan) and the North Anatolian Fault (NAF, Turkey). I will deploy a specifically designed GPS network along the NAF to compare with outputs of our method. The third step is the intensive use of the algorithm on a global scale to detect slip events of all temporal and spatial scales for a better understanding of the slip behaviour along all active continental faults.


year authors and title journal last update
List of publications.
2018 Bryan Riel, Mark Simons, Daniel Ponti, Piyush Agram, Romain Jolivet
Quantifying Ground Deformation in the Los Angeles and Santa Ana Coastal Basins Due to Groundwater Withdrawal
published pages: 3557-3582, ISSN: 0043-1397, DOI: 10.1029/2017wr021978
Water Resources Research 54/5 2019-08-29
2019 B. Gombert, Z. Duputel, E. Shabani, L. Rivera, R. Jolivet, J. Hollingsworth
Impulsive Source of the 2017 M W =7.3 Ezgeleh, Iran, Earthquake
published pages: , ISSN: 0094-8276, DOI: 10.1029/2018gl081794
Geophysical Research Letters 2019-08-29
2018 R. Jolivet, M. Simons
A Multipixel Time Series Analysis Method Accounting for Ground Motion, Atmospheric Noise, and Orbital Errors
published pages: 1814-1824, ISSN: 0094-8276, DOI: 10.1002/2017gl076533
Geophysical Research Letters 45/4 2019-08-29
2018 B. Gardonio, R. Jolivet, E. Calais, H. Leclère
The April 2017 M w 6.5 Botswana Earthquake: An Intraplate Event Triggered by Deep Fluids
published pages: 8886-8896, ISSN: 0094-8276, DOI: 10.1029/2018gl078297
Geophysical Research Letters 45/17 2019-08-29
2018 B. Gombert, Z. Duputel, R. Jolivet, M. Simons, J. Jiang, C. Liang, E.J. Fielding, L. Rivera
Strain budget of the Ecuador–Colombia subduction zone: A stochastic view
published pages: 288-299, ISSN: 0012-821X, DOI: 10.1016/j.epsl.2018.06.046
Earth and Planetary Science Letters 498 2019-08-29
2018 Pierre Romanet, Harsha S. Bhat, Romain Jolivet, Raúl Madariaga
Fast and Slow Slip Events Emerge Due to Fault Geometrical Complexity
published pages: 4809-4819, ISSN: 0094-8276, DOI: 10.1029/2018gl077579
Geophysical Research Letters 45/10 2019-08-29
2017 B Gombert, Z Duputel, R Jolivet, C Doubre, L Rivera, M Simons
Revisiting the 1992 Landers earthquake: a Bayesian exploration of co-seismic slip and off-fault damage
published pages: 839-852, ISSN: 0956-540X, DOI: 10.1093/gji/ggx455
Geophysical Journal International 212/2 2019-08-29
2017 Sylvain Michel, Jean‐Philippe Avouac, Romain Jolivet, Lifeng Wang
Seismic and Aseismic Moment Budget and Implication for the Seismic Potential of the Parkfield Segment of the San Andreas Fault
published pages: 19-38, ISSN: 0037-1106, DOI: 10.1785/0120160290
Bulletin of the Seismological Society of America 108/1 2019-08-29

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