Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements
Geysers fascinate scientists and visitors for several centuries. However, many driving mechanisms such as heat transfer in the conduit and in the subsurface remain poorly understood. We document for the first time transient temperature variations inside the active Strokkur's and nearby quasi‐do...
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ftunivgeneve:oai:unige.ch:aou:unige:172685 2023-12-10T09:49:55+01:00 Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements Collignon, Marine Pioli, Laura Trippanera, Daniele Carrier, Aurore Lupi, Matteo 2023 https://archive-ouverte.unige.ch/unige:172685 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JB026140 https://archive-ouverte.unige.ch/unige:172685 unige:172685 info:eu-repo/semantics/embargoedAccess ISSN: 2169-9313 Journal of geophysical research. Solid earth, vol. 128, no. 11 (2023) e2022JB026140 info:eu-repo/classification/ddc/550 info:eu-repo/semantics/article JournalArticle Article scientifique info:eu-repo/semantics/publishedVersion 2023 ftunivgeneve https://doi.org/10.1029/2022JB026140 2023-11-13T00:52:28Z Geysers fascinate scientists and visitors for several centuries. However, many driving mechanisms such as heat transfer in the conduit and in the subsurface remain poorly understood. We document for the first time transient temperature variations inside the active Strokkur's and nearby quasi‐dormant Great Geysir's conduits, Iceland. While recording temperature inside the conduit, we visually monitored Strokkur's activity at the vent with a high‐speed camera, providing a high temporal resolution of the eruptions. Our results reveal heat transfer from a bubble trap to and through the conduit. We propose a model for the eruptive cycle of Strokkur that includes vapor slug rise, eruption, and conduit refill. Each water jet of an eruption is marked by an initial pulse of liquid water and vapor, emitted at a velocity between 5 and 28 m/s and generally followed by a second pulse less than a second later. The timing of eruptions coincides with temperature maxima in the conduit. After the eruption, the conduit is refilled by water falling back in the pool and drained from neighboring groundwater‐saturated geological units. This results in a temperature drop, the amplitude of which increases with depth while its period is reduced. This reflects faster heat transfer in the deeper than shallower part of the conduit. The amplitude of temperature drop following an eruption also increases with the eruption order, implying larger heat release by higher‐order eruptions. Temperature in the conduit subsequently increases until the next eruption, starting then a new cycle. Article in Journal/Newspaper Iceland Université de Genève: Archive ouverte UNIGE Strokkur ENVELOPE(-20.542,-20.542,64.337,64.337) Journal of Geophysical Research: Solid Earth 128 11 |
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Université de Genève: Archive ouverte UNIGE |
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ftunivgeneve |
language |
English |
topic |
info:eu-repo/classification/ddc/550 |
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info:eu-repo/classification/ddc/550 Collignon, Marine Pioli, Laura Trippanera, Daniele Carrier, Aurore Lupi, Matteo Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements |
topic_facet |
info:eu-repo/classification/ddc/550 |
description |
Geysers fascinate scientists and visitors for several centuries. However, many driving mechanisms such as heat transfer in the conduit and in the subsurface remain poorly understood. We document for the first time transient temperature variations inside the active Strokkur's and nearby quasi‐dormant Great Geysir's conduits, Iceland. While recording temperature inside the conduit, we visually monitored Strokkur's activity at the vent with a high‐speed camera, providing a high temporal resolution of the eruptions. Our results reveal heat transfer from a bubble trap to and through the conduit. We propose a model for the eruptive cycle of Strokkur that includes vapor slug rise, eruption, and conduit refill. Each water jet of an eruption is marked by an initial pulse of liquid water and vapor, emitted at a velocity between 5 and 28 m/s and generally followed by a second pulse less than a second later. The timing of eruptions coincides with temperature maxima in the conduit. After the eruption, the conduit is refilled by water falling back in the pool and drained from neighboring groundwater‐saturated geological units. This results in a temperature drop, the amplitude of which increases with depth while its period is reduced. This reflects faster heat transfer in the deeper than shallower part of the conduit. The amplitude of temperature drop following an eruption also increases with the eruption order, implying larger heat release by higher‐order eruptions. Temperature in the conduit subsequently increases until the next eruption, starting then a new cycle. |
format |
Article in Journal/Newspaper |
author |
Collignon, Marine Pioli, Laura Trippanera, Daniele Carrier, Aurore Lupi, Matteo |
author_facet |
Collignon, Marine Pioli, Laura Trippanera, Daniele Carrier, Aurore Lupi, Matteo |
author_sort |
Collignon, Marine |
title |
Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements |
title_short |
Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements |
title_full |
Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements |
title_fullStr |
Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements |
title_full_unstemmed |
Conduit Processes at the Haukadalur Geyser‐Hosting Hydrothermal Field (Iceland) Revealed by In Situ Temperature and High‐Speed Camera Measurements |
title_sort |
conduit processes at the haukadalur geyser‐hosting hydrothermal field (iceland) revealed by in situ temperature and high‐speed camera measurements |
publishDate |
2023 |
url |
https://archive-ouverte.unige.ch/unige:172685 |
long_lat |
ENVELOPE(-20.542,-20.542,64.337,64.337) |
geographic |
Strokkur |
geographic_facet |
Strokkur |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
ISSN: 2169-9313 Journal of geophysical research. Solid earth, vol. 128, no. 11 (2023) e2022JB026140 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2022JB026140 https://archive-ouverte.unige.ch/unige:172685 unige:172685 |
op_rights |
info:eu-repo/semantics/embargoedAccess |
op_doi |
https://doi.org/10.1029/2022JB026140 |
container_title |
Journal of Geophysical Research: Solid Earth |
container_volume |
128 |
container_issue |
11 |
_version_ |
1784894681840091136 |