Schmidt-Aursch, Mechita; Schlindwein, Vera; Eagles, Graeme: Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023 [dataset publication series]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.988333 (dataset in review)
Abstract:
This measurement of the Earth's total magnetic field is part of an interdisciplinary project examining the Aurora hydrothermal vent field in an attempt to understand its fluid circulation. The magnetic data was acquired with a PicoEnvirotec airborne system. An optical magnetometer was towed on a 30 m long rope beneath the helicopter to minimize any disturbances from the aircraft. The mean flight velocity was 80 kn (148 km/h), the mean flight level of the helicopter was 300 ft (91 m). In total, 1,391 nmi (2,573 km) of line data could be recorded. Around the Aurora vent field and in the northern Lena Trough 15 west-east trending lines of 40 nmi (74 km) each were acquired. The line spacing was 2 nmi (3.7 km), so an area of in total 40 x 28 nmi (74 x 52 km) could be mapped. This covered the entire vent field, the central valley and the adjacent rift flanks. At the transition from the northern Lena Trough into the western Gakkel Ridge, three flights recording six northwest-southeast trending lines of approx. 70 nmi (130 km) length each were conducted. With a line spacing of 2 nmi (3.7 km), an area of 70 nmi x 10 nmi (130 km x 185 km) was surveyed. This covered not only the Gakkel Ridge, but also adjoining parts of the Nansen and Amundsen basins.
Related to:
Schlindwein, Vera (2023): The Expedition PS137 of the Research Vessel POLARSTERN to the Arctic Ocean in 2023. Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 781, 121 pp, https://doi.org/10.57738/BzPM_0781_2023
Schlindwein, Vera; Pilot, Matthias; Schmidt-Aursch, Mechita (2025): Project ALOIS: DEPAS ocean-bottom seismometer operations at the western Gakkel Ridge / Lena Trough in 2022-2023 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.984603
Funding:
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS131_03: Geophysics
Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven (AWI), grant/award no. AWI_PS137_02: Geophysik
Coverage:
Median Latitude: 82.903832 * Median Longitude: -6.430974 * South-bound Latitude: 82.581130 * West-bound Longitude: -10.715700 * North-bound Latitude: 83.404770 * East-bound Longitude: -1.618330
Date/Time Start: 2023-07-06T09:29:08 * Date/Time End: 2023-07-21T15:17:57
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
10 datasets
Download Data (login required; moratorium until 2026-12-31)
Datasets listed in this publication series
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023070609. https://doi.pangaea.de/10.1594/PANGAEA.988311
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023070612. https://doi.pangaea.de/10.1594/PANGAEA.988313
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023070707. https://doi.pangaea.de/10.1594/PANGAEA.988314
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023070711. https://doi.pangaea.de/10.1594/PANGAEA.988315
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023071012. https://doi.pangaea.de/10.1594/PANGAEA.988316
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023071014. https://doi.pangaea.de/10.1594/PANGAEA.988317
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023071207. https://doi.pangaea.de/10.1594/PANGAEA.988318
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023072107. https://doi.pangaea.de/10.1594/PANGAEA.988319
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023072110. https://doi.pangaea.de/10.1594/PANGAEA.988320
- Schmidt-Aursch, M; Schlindwein, V; Eagles, G (in review): Project ALOIS: helicopter-based magnetic measurements at the western Gakkel Ridge / Lena Trough in 2023, Flightnumber PS137_Heli_2023072113. https://doi.pangaea.de/10.1594/PANGAEA.988321