Combination of Multisatellite Altimetry and Tide Gauge Data for Determining Vertical Crustal Movements along Northern Mediterranean Coast

Edited: 2012-08-07
TitleCombination of Multisatellite Altimetry and Tide Gauge Data for Determining Vertical Crustal Movements along Northern Mediterranean Coast
Publication TypeJournal Article
Year of Publication2012
AuthorsGarcía, F., M. I. Vigo, D. García-García, and J. M. Sánchez-Reales
JournalPure and Applied Geophysics
Volume169
Issue8
Pagination1411 - 1423
Date Published08/2012
ISSN1420-9136
Keywordscoastal, gia, sea_level, tide_gauge
AbstractSea level variations (SLV) can be measured by tide gauges (TG) at the coast and by altimeters onboard satellites. The former measures the SLV relative to the coast, whereas altimetry provides the SLV with respect to a geocentric reference frame. The differences between SLV measurements from these two techniques can be used as an indirect assessment of vertical crustal motions at the TG sites. In this study, we exploit this idea, analyzing differences between sea level signals as measured by altimetric missions (TOPEX/Poseidon and Jason-1) and by 47 TG stations along northern Mediterranean coasts for the period 1993-2007. This allows us to estimate the vertical land motion along these coasts at the TG sites in this time window. For those sites where the TG is co-located or has a nearby global positioning system (GPS) station, these estimates are compared with the vertical rates derived from GPS measurements. Our results on vertical ground motion along the Mediterranean coast provide a useful source of data for studying, contrasting, and constraining tectonic models for the region.
DOI10.1007/s00024-011-0400-5
Short TitlePure Appl. Geophys.