Scholarlink

<p>The Northwest (NW) African continental margin is a typical passive margin hosting thick sedimentary sequences. Previous studies on the sedimentary processes shaping the margin were often based on research data from single cruise. Numerous vessel-based multibeam bathymetric datasets are, for example, available for the region, including data collected during transits and cruises where seafloor mapping was not a primary objective in the past 30 years. These data have, however, never been combined in a systematic manner, hindering margin-wide analysis of its sedimentation patterns. Here we compiled raw datasets from 99 cruises and different multibeam systems. The workflow is implemented in a cloud-based LINUX environment using open-source MB-System software. It achieves automation through recursive shell-scripting that handles multi-format conversion, navigation cleaning, and adaptive filtering constrained by a ± 15% depth tolerance relative to GEBCO reference grids to handle these large bathymetric datasets (15,234 tracklines). Our processed compilation provides a grid resolution of 50&#xa0;m, significantly outperforming EMODnet Bathymetry DTM 2024 (115&#xa0;m) and GEBCO 2025 GRID (450&#xa0;m). Despite the discontinuous seafloor coverage inherent in underway data that we present, the increased resolution allows for the first-time identification of minor scarps clustered near mega-slides and along canyon walls. The newly developed modular, efficient, and flexible workflow allows processing of large amounts of raw multibeam bathymetric datasets across different cruises and acquisition systems, and can easily be applied to other regions by adjusting the filter constraints, offering a scalable contribution to the Nippon Foundation-GEBCO Seabed 2030 Project.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

An automated workflow to compile multibeam bathymetric data from multiple cruises: The Northwest African continental margin

  • 期刊论文

  • 发表日期：

    2026年5月2日

查看全文
  • Qinqin Tang,
  • Jens Schneider von Deimling,
  • Jacob Geersen,
  • Sebastian Krastel

摘要

The Northwest (NW) African continental margin is a typical passive margin hosting thick sedimentary sequences. Previous studies on the sedimentary processes shaping the margin were often based on research data from single cruise. Numerous vessel-based multibeam bathymetric datasets are, for example, available for the region, including data collected during transits and cruises where seafloor mapping was not a primary objective in the past 30 years. These data have, however, never been combined in a systematic manner, hindering margin-wide analysis of its sedimentation patterns. Here we compiled raw datasets from 99 cruises and different multibeam systems. The workflow is implemented in a cloud-based LINUX environment using open-source MB-System software. It achieves automation through recursive shell-scripting that handles multi-format conversion, navigation cleaning, and adaptive filtering constrained by a ± 15% depth tolerance relative to GEBCO reference grids to handle these large bathymetric datasets (15,234 tracklines). Our processed compilation provides a grid resolution of 50 m, significantly outperforming EMODnet Bathymetry DTM 2024 (115 m) and GEBCO 2025 GRID (450 m). Despite the discontinuous seafloor coverage inherent in underway data that we present, the increased resolution allows for the first-time identification of minor scarps clustered near mega-slides and along canyon walls. The newly developed modular, efficient, and flexible workflow allows processing of large amounts of raw multibeam bathymetric datasets across different cruises and acquisition systems, and can easily be applied to other regions by adjusting the filter constraints, offering a scalable contribution to the Nippon Foundation-GEBCO Seabed 2030 Project.