Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond
Ice, a pervasive element across the Solar System, holds immense importance in understanding the response of the Earth to ongoing climate change as well as the dynamics of planetary bodies. This dissertation investigates ice fractures on terrestrial and planetary ice bodies, focusing on their impact...
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fttudelft:oai:tudelft.nl:uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 2024-02-11T09:58:40+01:00 Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond Poinelli, M. (author) Riva, R.E.M. (promotor) Vizcaino, M. (copromotor) Delft University of Technology (degree granting institution) 2023-11-20 http://resolver.tudelft.nl/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 https://doi.org/10.4233/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 en eng http://resolver.tudelft.nl/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 https://doi.org/10.4233/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 isbn:978-94-6419-986-4 © 2023 M. Poinelli physical oceanography fracture mechanics ice-ocean interactions ice shelves ice rifts icy moons doctoral thesis 2023 fttudelft https://doi.org/10.4233/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 2024-01-24T23:35:17Z Ice, a pervasive element across the Solar System, holds immense importance in understanding the response of the Earth to ongoing climate change as well as the dynamics of planetary bodies. This dissertation investigates ice fractures on terrestrial and planetary ice bodies, focusing on their impact on the melting of ice shelves in Antarctica and their dynamics on Europa, one of Jupiter’s moons. The urgency to understand the behavior of terrestrial ice shelves under environmental forcing is driven by the ongoing climate crisis. Antarctica is experiencing a rapid loss of mass, primarily due to increasing ocean-induced melting at the base of its ice shelves in response to global warming. The release of glacier meltwater into the world’s oceans contributes to arising the global sea level. However, the rate and magnitude of sea-level rise are highly uncertain and the potential ice mass-loss from Antarctica could significantly accelerate sea-level rise throughout this century due to the instability of its ice shelves. Thus, accurately projecting Antarctica’s contribution to global sea level necessitates a better understanding of the processes behind the loss of its ice shelves. In this dissertation, I examine the thinning of Antarctic ice shelves caused by enhanced melting at their base due to warming oceans. Intrusion of ocean heat beneath the ice shelves indeed plays a crucial role in projecting their future. Through idealized ocean modeling using the Massachussetts Institute of Technology general circulation model (MITgcm), I simulate ocean dynamics under the ice, investigating the impact of fractures and ice front retreat on the sub-shelf ocean circulation. Results indicate that fractures may act as barriers, inhibiting the intrusion of warm water towards the inland sections of the ice shelves, and thereby reducing basal melt. Furthermore, I examine the impact of the separation of iceberg A-68 from the Larsen C ice shelf in July 2017 on the sub-shelf ocean dynamics. This specific retreat event leads to the ... Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* Delft University of Technology: Institutional Repository Antarctic |
institution |
Open Polar |
collection |
Delft University of Technology: Institutional Repository |
op_collection_id |
fttudelft |
language |
English |
topic |
physical oceanography fracture mechanics ice-ocean interactions ice shelves ice rifts icy moons |
spellingShingle |
physical oceanography fracture mechanics ice-ocean interactions ice shelves ice rifts icy moons Poinelli, M. (author) Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond |
topic_facet |
physical oceanography fracture mechanics ice-ocean interactions ice shelves ice rifts icy moons |
description |
Ice, a pervasive element across the Solar System, holds immense importance in understanding the response of the Earth to ongoing climate change as well as the dynamics of planetary bodies. This dissertation investigates ice fractures on terrestrial and planetary ice bodies, focusing on their impact on the melting of ice shelves in Antarctica and their dynamics on Europa, one of Jupiter’s moons. The urgency to understand the behavior of terrestrial ice shelves under environmental forcing is driven by the ongoing climate crisis. Antarctica is experiencing a rapid loss of mass, primarily due to increasing ocean-induced melting at the base of its ice shelves in response to global warming. The release of glacier meltwater into the world’s oceans contributes to arising the global sea level. However, the rate and magnitude of sea-level rise are highly uncertain and the potential ice mass-loss from Antarctica could significantly accelerate sea-level rise throughout this century due to the instability of its ice shelves. Thus, accurately projecting Antarctica’s contribution to global sea level necessitates a better understanding of the processes behind the loss of its ice shelves. In this dissertation, I examine the thinning of Antarctic ice shelves caused by enhanced melting at their base due to warming oceans. Intrusion of ocean heat beneath the ice shelves indeed plays a crucial role in projecting their future. Through idealized ocean modeling using the Massachussetts Institute of Technology general circulation model (MITgcm), I simulate ocean dynamics under the ice, investigating the impact of fractures and ice front retreat on the sub-shelf ocean circulation. Results indicate that fractures may act as barriers, inhibiting the intrusion of warm water towards the inland sections of the ice shelves, and thereby reducing basal melt. Furthermore, I examine the impact of the separation of iceberg A-68 from the Larsen C ice shelf in July 2017 on the sub-shelf ocean dynamics. This specific retreat event leads to the ... |
author2 |
Riva, R.E.M. (promotor) Vizcaino, M. (copromotor) Delft University of Technology (degree granting institution) |
format |
Doctoral or Postdoctoral Thesis |
author |
Poinelli, M. (author) |
author_facet |
Poinelli, M. (author) |
author_sort |
Poinelli, M. (author) |
title |
Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond |
title_short |
Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond |
title_full |
Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond |
title_fullStr |
Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond |
title_full_unstemmed |
Ocean Dynamics and Ice Fractures: Insights from Earth and Beyond |
title_sort |
ocean dynamics and ice fractures: insights from earth and beyond |
publishDate |
2023 |
url |
http://resolver.tudelft.nl/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 https://doi.org/10.4233/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* |
genre_facet |
Antarc* Antarctic Antarctica Ice Shelf Ice Shelves Iceberg* |
op_relation |
http://resolver.tudelft.nl/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 https://doi.org/10.4233/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 isbn:978-94-6419-986-4 |
op_rights |
© 2023 M. Poinelli |
op_doi |
https://doi.org/10.4233/uuid:74137676-c3a5-41f2-9a47-8011de7d32c4 |
_version_ |
1790594397047357440 |