Holocene rapid ice melting and present-day crustal deformation due to GIA around the Lützow-Holm Bay, East Antarctica ...

• Main Authors: Okuno, Jun'ichi, Hattori, Akihisa, Doi, Koichiro, Irie, Yoshiya, Aoyama, Yuichi
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; East Antarctica; Lützow-Holm Bay; Syowa Station; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.57757/iugg23-1488; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017110

<!--!introduction!--> The deformation of the Earth's crust in Antarctica caused by Glacial Isostatic Adjustment (GIA) is highly dependent on the melting history of ice and the viscoelastic properties of the mantle. However, geodetic observations, including Global Navigation Satellite System (GNSS) measurements, are essential in constraining GIA model parameters. The Japanese Antarctic Research Expedition has conducted GNSS observations and absolute gravity measurements for over 20 years along the coast of Lützow-Holm Bay in East Antarctica, mainly at Syowa Station. This study aims to examine the geodetic signals associated with GIA from the observations made along the coast of Lützow-Holm Bay. Furthermore, the study involves numerical simulations of the signals based on the recently reported rapid ice thinning in this region during the mid-Holocene (Kawamata et al., 2020, QSR). According to Kawamata's paper, the target region underwent a rapid ice thinning of over 400 m from about 9 to 6 ka, as ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...