PANGAEA_996710 Sediment echosounder processed data (Atlas Parasound P70 echosounder entire dataset) of RV POLARSTERN during cruise PS141 Weigelt, Estella; McNeil, Mardi; Krastel, Sebastian; Gebhardt, Andrea Catalina Sediment echosounder processed data (Atlas Parasound P70 echosounder entire dataset) of RV POLARSTERN during cruise PS141 2026-08-20 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.996710 Investigator Estella Weigelt estella.weigelt@awi.de Earth Science DATE/TIME LATITUDE LONGITUDE Binary Object Binary Object (File Size) Binary Object (Media Type) File content geoscientificInformation ATLAS Parasound P70 Deep-Sea Parametric Sub-Bottom Profiler PARASOUND PS141 PS141_0_Underway-39 sediment echosounder Polarstern 2024-02-25 2024-04-10 Complete -44.143814 -36.202493 14.997291 141.169581 unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 1364 data points text/tab-separated-values Tobisch, Chiara Alina; Klages, Johann Philipp; Barrett, R S; Hochmuth, Katharina; Mühlberger-Krause, Timo; Baumann, L M; Gohl, Karsten; Krastel, Sebastian (2026): Internal Structure and Formation Process of a Giant East Antarctic Grounding-Zone Wedge. Geophysical Research Letters, https://doi.org/10.1029/2025GL121369 Krastel, Sebastian (2025): The Expedition PS141 of the Research Vessel POLARSTERN to the Davis Sea and Mawson Sea in 2024. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 793, 191 pp, https://doi.org/10.57738/BZPM_0793_2025 Weigelt, Estella; McNeil, Mardi; Krastel, Sebastian; Gebhardt, Andrea Catalina (2025): Sediment echosounder raw data (Atlas Parasound P70 echosounder entire dataset) of RV POLARSTERN during cruise PS141 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.980755

Sediment echosounder (Teledyne Parasound P70 echosounder) data are generally retrieved to get information on the characteristics of the upper tens of meters of the sub-seafloor. The data was collected on board the POLARSTERN during the cruise PS141 using the Teledyne Parasound P70 parametric sub-bottom echosounder mounted on the hull. A secondary low frequency of 4 kHz was used. Data was converted from the PS3 recording format to the SEGY format using the software ps32sgy written by Hanno Keil (University Bremen), in two versions: frequency and envelope. Envelope data exist along the entire trackline, while frequency data were generated for the research area in Antarctic waters only. Navigation was converted to UKOOA format with coordinates in WGS84. SGY and UKOOA fils are named using the starting date and time of the profile (YYYY_MMDD_HHMMSS). Due to the 12-digits-restriction of profile names in the UKOOA format, the first column of the UKOOA file contains a shortened version of the SGY file name (YYMMDDHHMMSS). During POLARSTERN cruise PS141, Parasound data formed the basis for determination of appropriate coring locations. The entire dataset of cruise PS141 is archived here, including data from international waters off Australia (Tasmania) to off Namibia. The target region is the continental shelf of Antarctica between 85°E and 115°E, off the ice margin from Wilhelm-II to Wilkes Land. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.996710"!

http://en.wikipedia.org/wiki/ISO_6709 LATITUDE http://en.wikipedia.org/wiki/ISO_6709 LONGITUDE http://en.wikipedia.org/wiki/ISO_8601 DATE/TIME https://doi.org/10.1029/2025GL121369 Internal Structure and Formation Process of a Giant East Antarctic Grounding-Zone Wedge https://doi.org/10.17815/jlsrf-3-163 Polarstern https://doi.org/10.57738/BZPM_0793_2025 The Expedition PS141 of the Research Vessel POLARSTERN to the Davis Sea and Mawson Sea in 2024 https://doi.pangaea.de/10.1594/PANGAEA.980755 Sediment echosounder raw data (Atlas Parasound P70 echosounder entire dataset) of RV POLARSTERN during cruise PS141 https://hdl.handle.net/10013/epic.26909.d007 ATLAS Parasound P70 Deep-Sea Parametric Sub-Bottom Profiler DIF 9.4 2026-08-20 2026-08-27