Recent Macaronesian kinematics from GNSS ground displacement analysis
نویسندگان
چکیده
Macaronesia is a complex oceanic region spanning three tectonic plates in the northeast Atlantic ocean. It composed of four archipelagos, widely distributed and limited to east by Iberian Peninsula north-western coast Africa. This study aims clarify recent Macaronesian kinematics from 19 GNSS stations located on archipelagos African coastlines. The analysis based nearly 15 years common data acquisition aimed detect new effects intraplate tectonics or similar local/regional events consistent with calculated ground displacements. Evaluating residual velocities relative those expected NNR-MORVEL56 model, higher residuals were found at continental coastal (Africa) than ones (Canaries Madeira). From computed strain rate map, possible existence shear zone connecting Gloria Transmoroccan fault systems, already mentioned other authors, was depicted. Cluster statistical horizontal helped identify boundaries groups analogous within this region. Three identified Azores, highlighting African-Nubian-Eurasian diffuse plate boundary Furthermore, Canary Islands, two distinct kinematic behaviours detected, possibly due activity along previously detected between Tenerife Gran Canaria, where some have Madeira Cape Verde stations, while others stations. Finally, all crust, except Verde, present subsidence which may be attributed isostatic adjustment.
منابع مشابه
Peripatric speciation in an endemic Macaronesian plant after recent divergence from a widespread relative
The Macaronesian Scrophularia lowei is hypothesized to have arisen from the widespread S. arguta on the basis of several phylogenetic studies of the genus, but sampling has been limited. Although these two annual species are morphologically distinct, the origin of S. lowei is unclear because genetic studies focused on this Macaronesian species are lacking. We studied 5 S. lowei and 25 S. arguta...
متن کاملMonocular Camera/IMU/GNSS Integration for Ground Vehicle Navigation in Challenging GNSS Environments
Low-cost MEMS-based IMUs, video cameras and portable GNSS devices are commercially available for automotive applications and some manufacturers have already integrated such facilities into their vehicle systems. GNSS provides positioning, navigation and timing solutions to users worldwide. However, signal attenuation, reflections or blockages may give rise to positioning difficulties. As oppose...
متن کاملA GNSS Interference Detection Method Based on Multiple Ground Stations
For a GNSS receiver’s robustness against RFI and the high accuracy of navigation solution in GNSS, interference source detection and mitigation are needed. In this paper, an adaptive lattice IIR notch filter is employed to track single-tone continuous wave and swept continuous wave interference signals, and an interference detection method is proposed. Furthermore, this paper presents interfere...
متن کاملVLBI observations of GNSS-satellites: from scheduling to analysis
The possibility of observing satellites with the very long baseline interferometry (VLBI) technique has been discussed for several years in the geodetic community, with observations of either existing satellites of the global navigation satellite systems or of satellites dedicated to realise a space tie. Such observations were carried out using the Australian telescopes in Hobart and Ceduna whi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Studia Geophysica Et Geodaetica
سال: 2021
ISSN: ['0039-3169', '1573-1626']
DOI: https://doi.org/10.1007/s11200-020-1122-x