Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making
<jats:p>Seafloor hydrothermalism plays a critical role in fundamental interactions between geochemical and biological processes in the deep ocean. A significant number of hydrothermal vents are hypothesized to exist, but many of these remain undiscovered due in part to the difficulty of detect...
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| Format: | Article |
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Frontiers Media SA
2022
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| Online Access: | https://hdl.handle.net/1721.1/146565 |
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| author | Preston, Victoria Flaspohler, Genevieve Kapit, Jason Pardis, William Youngs, Sarah Martocello, Donald E. Roy, Nicholas Girguis, Peter R. Wankel, Scott D. Michel, Anna P. M. |
| author2 | Woods Hole Oceanographic Institution |
| author_facet | Woods Hole Oceanographic Institution Preston, Victoria Flaspohler, Genevieve Kapit, Jason Pardis, William Youngs, Sarah Martocello, Donald E. Roy, Nicholas Girguis, Peter R. Wankel, Scott D. Michel, Anna P. M. |
| author_sort | Preston, Victoria |
| collection | MIT |
| description | <jats:p>Seafloor hydrothermalism plays a critical role in fundamental interactions between geochemical and biological processes in the deep ocean. A significant number of hydrothermal vents are hypothesized to exist, but many of these remain undiscovered due in part to the difficulty of detecting hydrothermalism using standard sensors on rosettes towed in the water column or robotic platforms performing surveys. Here, we use <jats:italic>in situ</jats:italic> methane sensors to complement standard sensing technology for hydrothermalism discovery and compare sensors on a towed rosette and an autonomous underwater vehicle (AUV) during a 17 km long transect in the Northern Guaymas Basin in the Gulf of California. This transect spatially intersected with a known hydrothermally active venting site. These data show that methane signalled possible hydrothermal-activity 1.5–3 km laterally (100–150 m vertically) from a known vent. Methane as a signal for hydrothermalism performed similarly to standard turbidity sensors (plume detection 2.2–3.3 km from reference source), and more sensitively and clearly than temperature, salinity, and oxygen instruments which readily respond to physical mixing in background seawater. We additionally introduce change-point detection algorithms—streaming cross-correlation and regime identification—as a means of real-time hydrothermalism discovery and discuss related data supervision technologies that could be used in planning, executing, and monitoring explorative surveys for hydrothermalism.</jats:p> |
| first_indexed | 2024-09-23T15:13:19Z |
| format | Article |
| id | mit-1721.1/146565 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T15:13:19Z |
| publishDate | 2022 |
| publisher | Frontiers Media SA |
| record_format | dspace |
| spelling | mit-1721.1/1465652023-06-30T20:06:11Z Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making Preston, Victoria Flaspohler, Genevieve Kapit, Jason Pardis, William Youngs, Sarah Martocello, Donald E. Roy, Nicholas Girguis, Peter R. Wankel, Scott D. Michel, Anna P. M. Woods Hole Oceanographic Institution Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences General Earth and Planetary Sciences <jats:p>Seafloor hydrothermalism plays a critical role in fundamental interactions between geochemical and biological processes in the deep ocean. A significant number of hydrothermal vents are hypothesized to exist, but many of these remain undiscovered due in part to the difficulty of detecting hydrothermalism using standard sensors on rosettes towed in the water column or robotic platforms performing surveys. Here, we use <jats:italic>in situ</jats:italic> methane sensors to complement standard sensing technology for hydrothermalism discovery and compare sensors on a towed rosette and an autonomous underwater vehicle (AUV) during a 17 km long transect in the Northern Guaymas Basin in the Gulf of California. This transect spatially intersected with a known hydrothermally active venting site. These data show that methane signalled possible hydrothermal-activity 1.5–3 km laterally (100–150 m vertically) from a known vent. Methane as a signal for hydrothermalism performed similarly to standard turbidity sensors (plume detection 2.2–3.3 km from reference source), and more sensitively and clearly than temperature, salinity, and oxygen instruments which readily respond to physical mixing in background seawater. We additionally introduce change-point detection algorithms—streaming cross-correlation and regime identification—as a means of real-time hydrothermalism discovery and discuss related data supervision technologies that could be used in planning, executing, and monitoring explorative surveys for hydrothermalism.</jats:p> 2022-11-21T16:55:16Z 2022-11-21T16:55:16Z 2022-10-25 Article http://purl.org/eprint/type/JournalArticle 2296-6463 https://hdl.handle.net/1721.1/146565 Preston, Victoria, Flaspohler, Genevieve, Kapit, Jason, Pardis, William, Youngs, Sarah et al. 2022. "Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making." 10. 10.3389/feart.2022.984355 Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/ application/pdf Frontiers Media SA Frontiers |
| spellingShingle | General Earth and Planetary Sciences Preston, Victoria Flaspohler, Genevieve Kapit, Jason Pardis, William Youngs, Sarah Martocello, Donald E. Roy, Nicholas Girguis, Peter R. Wankel, Scott D. Michel, Anna P. M. Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making |
| title | Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making |
| title_full | Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making |
| title_fullStr | Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making |
| title_full_unstemmed | Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making |
| title_short | Discovering hydrothermalism from Afar: In Situ methane instrumentation and change-point detection for decision-making |
| title_sort | discovering hydrothermalism from afar in situ methane instrumentation and change point detection for decision making |
| topic | General Earth and Planetary Sciences |
| url | https://hdl.handle.net/1721.1/146565 |
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