Tectonic plate motion and co-seismic steps surveyed by DORIS field beacons: the New Hebrides experiment

Autor:	Jean-François Crétaux, Laurent Soudarin, S. Calmant, J. J. Valette
Rok vydání:	2000
Předmět:	Quake (natural phenomenon) business.industry New Hebrides Geodesy Latitude Beacon Plate tectonics Geophysics Tropical islands Geochemistry and Petrology Global Positioning System Computers in Earth Sciences business Longitude Seismology Geology
Zdroj:	Journal of Geodesy. 74:512-518
ISSN:	1432-1394 0949-7714
Popis:	The New Hebrides experiment consisted of setting up a pair of DORIS beacons in remote tropical islands in the southwestern Pacific, between 1993 and 1997. Because of orbitography requirements on TOPEX/Poseidon, the beacons were only transmitting to SPOT satellites. Root-mean-square (RMS) scatters at the centimeter level on the latitude and vertical components were achieved, but 2-cm RMS scatters affected the longitude component. Nevertheless, results of relative velocity (123 mm/year N250°) are very consistent with those obtained using the global positioning system (GPS) (126 mm/yr N246°). The co-seismic step (12 mm N60°) related to the Walpole event (MW = 7.7) is consistent with that derived from GPS (10 mm N30°) or from the centroid moment tensor (CMT) of the quake (12 mm N000°).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::92b928bbc38506a024655c4506c6a681 https://doi.org/10.1007/s001900000113 Zobrazit plný text záznamu Full text from SpringerLink