Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring
We present a 700 km airborne electromagnetic survey of late-spring fast ice and sub-ice platelet layer (SIPL) thickness distributions from McMurdo Sound to Cape Adare, providing a first-time inventory of fast ice thickness close to its annual maximum. The overall mode of the consolidated ice (includ...
Published in: | Journal of Geophysical Research: Oceans |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley-Agu
2023
|
Subjects: | |
Online Access: | http://hdl.handle.net/2122/16684 https://doi.org/10.1029/2022JC019459 |
id |
ftingv:oai:www.earth-prints.org:2122/16684 |
---|---|
record_format |
openpolar |
spelling |
ftingv:oai:www.earth-prints.org:2122/16684 2024-02-11T10:04:56+01:00 Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring Langhorne, Pat Haas, Christian Price, Daniel Rack, Wolfgang Leonard, G H Brett, G M Urbini, Stefano #PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia 2023 http://hdl.handle.net/2122/16684 https://doi.org/10.1029/2022JC019459 en eng Wiley-Agu Journal of Geophysical Research: Oceans /128 (2023) 2169-9291 http://hdl.handle.net/2122/16684 doi:10.1029/2022JC019459 open Annual maximum fast ice and sub-ice platelet layer thickness distributions are surveyed by airborne electromagnetics over 700 km of Ross Sea Deformed against the coast 50% of transect volume was rough first-year fast ice (mode 3.3 m thick) that was thicker than nearby pack ice Sub-ice platelet layers over 0.5 m thick underlay level ice over large parts of four embayments revealing land ice-fast ice interaction article 2023 ftingv https://doi.org/10.1029/2022JC019459 2024-01-16T23:26:25Z We present a 700 km airborne electromagnetic survey of late-spring fast ice and sub-ice platelet layer (SIPL) thickness distributions from McMurdo Sound to Cape Adare, providing a first-time inventory of fast ice thickness close to its annual maximum. The overall mode of the consolidated ice (including snow) thickness was 1.9 m, less than its mean of 2.6 ± 1.0 m. Our survey was partitioned into level and rough ice, and SIPL thickness was estimated under level ice. Although level ice, with a mode of 2.0 m and mean of 2.0 ± 0.6 m, was prevalent, rough ice occupied 41% of the transect by length, 50% by volume, and had a mode of 3.3 m and mean of 3.2 ± 1.2 m. The thickest 10% of rough ice was almost 6 m on average, inclusive of a 2 km segment thicker than 8 m in Moubray Bay. The thickest ice occurred predominantly along the northwestern Ross Sea, due to compaction against the coast. The adjacent pack ice was thinner (by ∼1 m) than the first-year fast ice. In Silverfish Bay, offshore Hells Gate Ice Shelf, New Harbor, and Granite Harbor, the SIPL transect volume was a significant fraction (0.30) of the consolidated ice volume. The thickest 10% of SIPLs averaged nearly 3 m thick, and near Hells Gate Ice Shelf the SIPL was almost 10 m thick, implying vigorous heat loss to the ocean (∼90 W m −2). We conclude that polynya-induced ice deformation and interaction with continental ice influence fast ice thickness in the western Ross Sea. Published e2022JC019459 OSA2: Evoluzione climatica: effetti e loro mitigazione JCR Journal Article in Journal/Newspaper Ice Shelf McMurdo Sound Ross Sea Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Adare ENVELOPE(170.233,170.233,-71.283,-71.283) Cape Adare ENVELOPE(175.000,175.000,-71.000,-71.000) Granite Harbor ENVELOPE(162.733,162.733,-76.883,-76.883) Hells Gate ENVELOPE(163.800,163.800,-74.850,-74.850) McMurdo Sound Moubray Bay ENVELOPE(170.250,170.250,-72.183,-72.183) New Harbor ENVELOPE(163.850,163.850,-77.600,-77.600) Ross Sea Silverfish Bay ENVELOPE(164.667,164.667,-74.617,-74.617) Journal of Geophysical Research: Oceans 128 2 |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
topic |
Annual maximum fast ice and sub-ice platelet layer thickness distributions are surveyed by airborne electromagnetics over 700 km of Ross Sea Deformed against the coast 50% of transect volume was rough first-year fast ice (mode 3.3 m thick) that was thicker than nearby pack ice Sub-ice platelet layers over 0.5 m thick underlay level ice over large parts of four embayments revealing land ice-fast ice interaction |
spellingShingle |
Annual maximum fast ice and sub-ice platelet layer thickness distributions are surveyed by airborne electromagnetics over 700 km of Ross Sea Deformed against the coast 50% of transect volume was rough first-year fast ice (mode 3.3 m thick) that was thicker than nearby pack ice Sub-ice platelet layers over 0.5 m thick underlay level ice over large parts of four embayments revealing land ice-fast ice interaction Langhorne, Pat Haas, Christian Price, Daniel Rack, Wolfgang Leonard, G H Brett, G M Urbini, Stefano Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring |
topic_facet |
Annual maximum fast ice and sub-ice platelet layer thickness distributions are surveyed by airborne electromagnetics over 700 km of Ross Sea Deformed against the coast 50% of transect volume was rough first-year fast ice (mode 3.3 m thick) that was thicker than nearby pack ice Sub-ice platelet layers over 0.5 m thick underlay level ice over large parts of four embayments revealing land ice-fast ice interaction |
description |
We present a 700 km airborne electromagnetic survey of late-spring fast ice and sub-ice platelet layer (SIPL) thickness distributions from McMurdo Sound to Cape Adare, providing a first-time inventory of fast ice thickness close to its annual maximum. The overall mode of the consolidated ice (including snow) thickness was 1.9 m, less than its mean of 2.6 ± 1.0 m. Our survey was partitioned into level and rough ice, and SIPL thickness was estimated under level ice. Although level ice, with a mode of 2.0 m and mean of 2.0 ± 0.6 m, was prevalent, rough ice occupied 41% of the transect by length, 50% by volume, and had a mode of 3.3 m and mean of 3.2 ± 1.2 m. The thickest 10% of rough ice was almost 6 m on average, inclusive of a 2 km segment thicker than 8 m in Moubray Bay. The thickest ice occurred predominantly along the northwestern Ross Sea, due to compaction against the coast. The adjacent pack ice was thinner (by ∼1 m) than the first-year fast ice. In Silverfish Bay, offshore Hells Gate Ice Shelf, New Harbor, and Granite Harbor, the SIPL transect volume was a significant fraction (0.30) of the consolidated ice volume. The thickest 10% of SIPLs averaged nearly 3 m thick, and near Hells Gate Ice Shelf the SIPL was almost 10 m thick, implying vigorous heat loss to the ocean (∼90 W m −2). We conclude that polynya-induced ice deformation and interaction with continental ice influence fast ice thickness in the western Ross Sea. Published e2022JC019459 OSA2: Evoluzione climatica: effetti e loro mitigazione JCR Journal |
author2 |
#PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma2, Roma, Italia |
format |
Article in Journal/Newspaper |
author |
Langhorne, Pat Haas, Christian Price, Daniel Rack, Wolfgang Leonard, G H Brett, G M Urbini, Stefano |
author_facet |
Langhorne, Pat Haas, Christian Price, Daniel Rack, Wolfgang Leonard, G H Brett, G M Urbini, Stefano |
author_sort |
Langhorne, Pat |
title |
Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring |
title_short |
Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring |
title_full |
Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring |
title_fullStr |
Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring |
title_full_unstemmed |
Fast Ice Thickness Distribution in the Western Ross Sea in Late Spring |
title_sort |
fast ice thickness distribution in the western ross sea in late spring |
publisher |
Wiley-Agu |
publishDate |
2023 |
url |
http://hdl.handle.net/2122/16684 https://doi.org/10.1029/2022JC019459 |
long_lat |
ENVELOPE(170.233,170.233,-71.283,-71.283) ENVELOPE(175.000,175.000,-71.000,-71.000) ENVELOPE(162.733,162.733,-76.883,-76.883) ENVELOPE(163.800,163.800,-74.850,-74.850) ENVELOPE(170.250,170.250,-72.183,-72.183) ENVELOPE(163.850,163.850,-77.600,-77.600) ENVELOPE(164.667,164.667,-74.617,-74.617) |
geographic |
Adare Cape Adare Granite Harbor Hells Gate McMurdo Sound Moubray Bay New Harbor Ross Sea Silverfish Bay |
geographic_facet |
Adare Cape Adare Granite Harbor Hells Gate McMurdo Sound Moubray Bay New Harbor Ross Sea Silverfish Bay |
genre |
Ice Shelf McMurdo Sound Ross Sea |
genre_facet |
Ice Shelf McMurdo Sound Ross Sea |
op_relation |
Journal of Geophysical Research: Oceans /128 (2023) 2169-9291 http://hdl.handle.net/2122/16684 doi:10.1029/2022JC019459 |
op_rights |
open |
op_doi |
https://doi.org/10.1029/2022JC019459 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
128 |
container_issue |
2 |
_version_ |
1790601697103446016 |