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High-resolution bathymetry coupled with 3D models of hydrothermal vents from opportunistically-acquired imagery: Aurora vent field, Arctic Ocean

Author

Listed:
  • Tea Isler
  • Michael Jakuba
  • Tom Kwasnitschka
  • Autun Purser
  • Andrew Klesh
  • Vera Schlindwein
  • Christopher R. German

Abstract

Active venting at the Aurora hydrothermal field was first located in 2014. In July 2023, the AUV/ROV Nereid Under Ice (NUI) expanded the known size of the Aurora hydrothermal field, discovering 7 ‘black smokers’ together with associated lower-temperature flow. In this study, we present a new high-resolution bathymetric map acquired from NUI which has allowed us to identify morphological features previously undetectable from ship multibeam. All known active vents are aligned along a single 230 m-long ridge, parallel to the Gakkel Ridge strike direction and intersected by a scarp following the general trend of the Lena Trough. The new vents were measured at up to 17 m height from 3D models generated using structure-from-motion techniques applied to opportunistically acquired imaging data collected while in exploration mode. The extent of extinct sulfides present, together with the towering height of vents are consistent with a period of sustained high-temperature venting at Aurora.

Suggested Citation

  • Tea Isler & Michael Jakuba & Tom Kwasnitschka & Autun Purser & Andrew Klesh & Vera Schlindwein & Christopher R. German, 2024. "High-resolution bathymetry coupled with 3D models of hydrothermal vents from opportunistically-acquired imagery: Aurora vent field, Arctic Ocean," Journal of Maps, Taylor & Francis Journals, vol. 20(1), pages 2404878-240, December.
    • Handle: RePEc:taf:tjomxx:v:20:y:2024:i:1:p:2404878
    DOI: 10.1080/17445647.2024.2404878
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