Analysis of GNSS Time Series Recorded on South Shetland Island and Antarctic Peninsula during the Geodynamic Activity in 2020 of the Orca Underwater Volcano (Brandfield Sea Rift, Antarctica) †

The region defined by the South Shetland Islands, Bransfield Sea, and Antarctic Peninsula has complex geodynamic activity resulting from the active subduction process of the Phoenix Plate under the Antarctic Plate. This subduction produces a rift of expansion along the Bransfield Sea basin between t...

Full description

Bibliographic Details
Published in:ITISE 2023
Main Authors: Rosado Moscoso, Belén, Pérez Peña, Alejandro, Barba, Paola, Ramírez Zelaya, Javier Antonio, Carmona Medeiro, Enrique, Martín, Rosa, Jiménez, Vanessa, Gárate, Jorge, de Gil, Amos, Berrocoso Domínguez, Manuel
Other Authors: Matemáticas
Format: Article in Journal/Newspaper
Language:English
Published: Multidisciplinary Digital / Publishing Institute (MDPI) 2024
Subjects:
geodetic time series
geodynamic
GNSS system
volcano–tectonic deformation
Antarctic
The Antarctic
Antarctic Peninsula
King George Island
South Shetland Islands
Anvers
Anvers Island
Three Sisters
Artigas
Antarc*
Antarctica
Orca
Online Access:http://hdl.handle.net/10498/32123
https://doi.org/10.3390/ENGPROC2023039025
Description
Summary:The region defined by the South Shetland Islands, Bransfield Sea, and Antarctic Peninsula has complex geodynamic activity resulting from the active subduction process of the Phoenix Plate under the Antarctic Plate. This subduction produces a rift of expansion along the Bransfield Sea basin between the South Shetland Islands and the Antarctic Peninsula. There is also a chain of submarine (Orca, Three Sisters, and Building A) and emerged (Deception and Pinguin) volcanoes. In 2020, there was intense seismic activity around the Orca volcano with earthquakes of up to 6.9 Mw. This paper presents displacement models of this seismic activity produced in the region. The geodetic time series of the GNSS stations located in the region were analyzed: UYBA at the Uruguayan Artigas Antarctic Base (King George Island) and PAL2 at the U.S. Palmer Antarctic Base (Anvers Island). These data were taken from the Nevada Geodetic Laboratory.

Similar Items