Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data ...

• Main Authors: Dziadek, Ricarda, Ferraccioli, Fausto, Gohl, Karsten
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Curie Depth; Geothermal heat flow; Magnetic Anomaly; Smith Glacier; Thwaites Glacier; West Antarctica; File content; LATITUDE; LONGITUDE; Binary Object; Binary Object File Size; Multiple investigations; Amundsen Sea; Antarc*; Antarctica
• Online Access: https://dx.doi.org/10.1594/pangaea.932452; https://doi.pangaea.de/10.1594/PANGAEA.932452

We investigated geothermal heat flow derived from new and existing magnetic anomaly data in the Amundsen Sea sector of West Antarctica. The magnetic anomaly data set (ASE_MagneticCompilation_Dziadeketal.tif) results from a compilation of surveys from RV Polarstern expedition PS104 (2017) and existing, partly unpublished data from various campaigns (TORUS, BBAS, AGASEA and ADMAP2.0). Further details of the processing are given in the manuscript. During PS104 the on board BO-105 helicopter was equipped with a caesium-vapour magnetometer, which was towed with a 30 m long cable and data values are given in Nanotesla. Curie depth estimates were calculated and served as a boundary condition for geothermal modeling. We split the magnetic anomaly grid into "windows", with 200x200km and a 300x300km dimensions and apply spectral methods to obtain the curie depth. Depths are calculated using GMT fft tool end errors are standard deviation from fft. The results for the respective window sizes are given in ...