Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Francois Ayoub"'
Autor:
Ugo Nanni, Dirk Scherler, Francois Ayoub, Romain Millan, Frederic Herman, Jean-Philippe Avouac
Glacier displacement can in principle be measured at the large-scale by cross-correlation of satellite images. At weekly to monthly scales, the expected displacement is often of the same order as the noise for the commonly used satellite images, comp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::621ac8e4af898b225c12a3cf595b81db
https://doi.org/10.5194/egusphere-egu23-13863
https://doi.org/10.5194/egusphere-egu23-13863
Autor:
Ugo Nanni, Dirk Scherler, Francois Ayoub, Romain Millan, Frederic Herman, Jean-Philippe Avouac
Publikováno v:
eISSN
Accurate measurements of ice flow are essential to predict future changes in glaciers and ice caps. Glacier displacement can in principle be measured at the large-scale by cross-correlation of satellite images. At weekly to monthly scales, the expect
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f51c7bb2857505cbb1964ee6ee545e47
https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1035/
https://egusphere.copernicus.org/preprints/2022/egusphere-2022-1035/
Publikováno v:
IGARSS
Small ocean eddies are observed in fine-resolution satellite imagery within the coastal regions and ice margins of the world's oceans. The derivation of surface velocity fields of these features would enable geophysical estimates of the kinematic ene
Autor:
Benjamin Holt, Francois Ayoub, Cathleen E. Jones, John B. Shaw, W. Wagner, Michael P. Lamb, David Mohrig
Publikováno v:
Remote Sensing of Environment. 212:148-160
Water flow patterns across coastal and deltaic wetlands affect biogeochemical cycling, denitrification, organic carbon burial, and coastal landscape evolution. Our understanding of such patterns across these important landscapes is incomplete, howeve
Autor:
Bethany L. Ehlmann, Francois Ayoub, Sarah E. Minson, Nathan T. Bridges, Raymond E. Arvidson, Mathieu G.A. Lapotre, Ryan C. Ewing, Abigail A. Fraeman
Publikováno v:
Journal of Geophysical Research: Planets. 122:2489-2509
During its ascent up Mount Sharp, the Mars Science Laboratory Curiosity rover traversed the Bagnold Dune Field. We model sand modal mineralogy and grain size at four locations near the rover traverse, using orbital shortwave infrared single-scatterin
Publikováno v:
Earth and Planetary Science Letters. 457:204-212
The transport and deposition of sand is the most prevalent agent of landscape modification on Mars today, with fluxes comparable to some sand dunes on Earth. Until now, the relationship between sand flux and dune field morphology has been poorly cons
Autor:
Francois Ayoub, David Mohrig, Michael P. Lamb, R. Wayne Wagner, Cathleen E. Jones, John B. Shaw, J. Austin Chadwick, Benjamin Holt, Thomas S. Coffey
Publikováno v:
Geophysical Research Letters. 43:5035-5042
Shallow coastal regions are among the fastest evolving landscapes but are notoriously difficult to measure with high spatiotemporal resolution. Using Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) data, we demonstrate that high signal
Autor:
Ryan C. Ewing, Jean Philippe Avouac, Francois Ayoub, Essam Heggy, Nathalie Vriend, Sylvain Michel
This study explores validating and calibrating the wind regime predicted by Global Circulation Models (GCM) on Earth and other planets using optical remote sensing of dune dynamics. We use Spot-5 images to track the migration of 64 Barchan dunes in Q
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a36e9a122f055eacdf65ace956bb89bf
https://resolver.caltech.edu/CaltechAUTHORS:20180615-090858454
https://resolver.caltech.edu/CaltechAUTHORS:20180615-090858454
Publikováno v:
Journal of Geophysical Research. Planets
Journal of Geophysical Research. Planets, 2018, 123 (7), pp.1881-1900. ⟨10.1029/2018JE005649⟩
Grindrod, P M, Hollingsworth, J, Ayoub, F & Hunt, S A 2018, ' The Search for Active Marsquakes Using Subpixel Coregistration and Correlation: Best Practice and First Results ', Journal of Geophysical Research: Planets, vol. 123, no. 7, pp. 1881-1900 . https://doi.org/10.1029/2018JE005649
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2018, 123 (7), pp.1881-1900. ⟨10.1029/2018JE005649⟩
Journal of Geophysical Research. Planets, 2018, 123 (7), pp.1881-1900. ⟨10.1029/2018JE005649⟩
Grindrod, P M, Hollingsworth, J, Ayoub, F & Hunt, S A 2018, ' The Search for Active Marsquakes Using Subpixel Coregistration and Correlation: Best Practice and First Results ', Journal of Geophysical Research: Planets, vol. 123, no. 7, pp. 1881-1900 . https://doi.org/10.1029/2018JE005649
Journal of Geophysical Research. Planets, Wiley-Blackwell, 2018, 123 (7), pp.1881-1900. ⟨10.1029/2018JE005649⟩
The state of seismic activity on Mars is currently unknown. On Earth, coseismic displacement has been observed using visible wavelength images and subpixel coregistration and correlation techniques. We apply this method to Mars with the COSI‐Corr (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b59bdc03f0074b93cd3a61d74f758504
https://hal.science/hal-02416344
https://hal.science/hal-02416344