Crustal velocity and strain rate fields in the Balearic Islands based on continuous GPS time series from the XGAIB network (2010–2013)

Abstract

Crustal velocity and strain rate fields in the Balearic Islands based on continuous GPS time series from the XGAIB network (2010)(2011)(2012)(2013), Journal of Geodynamics (2014), http://dx.doi.org/10. 1016/j.jog.2014.05.005 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. AbstractIn this paper, we present a first estimation, using the GIPSY-OASIS software, of the crustal velocity and strain rate fields in the Balearic Islands (Spain), based on continuous GPS observations from the XGAIB network spanning the period 2010-2013. The XGAIB network consists of nine permanent, widely distributed stations that have operated continuously since 2010. In this paper, we describe the XGAIB network and the CGPS data processing and present our principle results in terms of the position time series and velocities of all of the sites, which were observed for more than three and a half years. In addition, strain tensors were estimated from the velocity field to obtain the first realistic crustal deformation model of the archipelago.The strains exhibit gradual variation across the Balearic Islands, from WNW-ESE extension in the southwest (Ibiza and Formentera) to NW-SE compression in the A c c e p t e d M a n u s c r i p t 2 northeast (Menorca). These results constitute an advance in our knowledge of the tectonics of the western Mediterranean region. Highlights-We model the crustal velocity and strain rate fields in the Balearic Islands.-We use continuous GPS observations from a permanent GNSS network.-The strains exhibit gradual variation from WNW-ESE in the southwest to NW-SE in the northeast.

Geodetic fault slip rates on active faults in the Baza sub-Basin (SE Spain): Insights for seismic hazard assessment

“…GIPSY is a GNSS-inferred positioning system and orbit analysis simulation software package developed by the Jet Propulsion Laboratory (JPL) (https://gip sy-oasis.jpl.nasa.gov/). We followed the processing strategy described in Bertiger et al ( 2010) with zero-ambiguity resolution and an identical standard procedure for all campaigns (Sánchez-Alzola et al, 2014). This GPS processing included the use of JPL final ephemeris and Pole products in the same IGS08 reference frame and the introduction of the FES2004 ocean tide loading model from Lyard et al (2006).…”

Exceptionally stable preindustrial sea level inferred from the western Mediterranean Sea

“…Mallorca sits in a geologically stable region, away from any of the major tectonic boundaries that exist in the Mediterranean basin. The absence of significant earthquake activity (i.e., M > 3.5) in historical times ( 21 ) and minimal vertical motions since the Upper Miocene (the Supplementary Materials) ( 15 , 22 , 23 ), suggest that Mallorca represents one of the most tectonically stable regions in the western Mediterranean Sea. Therefore, we assume that tectonics has had a negligible influence on the Late Holocene RSL evolution, and no correction for vertical displacements is applied to our sea level index points.…”

Crustal velocity field in Baza and Galera faults: A new estimation from GPS position time series in 2009 - 2018 time span

“…All the JPL products are referred to the IGb14 reference frame (IGS Mail, 2018), ensuring an unchanged geodetic frame for all the observation campaigns. This methodology has been a good approach for an accurate crustal deformation analysis that has already been applied in many other geodetic studies (Sánchez-Alzola et al, 2014;Gárate et al, 2015;Gil et al, 2017;Borque et al, 2019).…”