Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet
The present-day sea-level variations and vertical movements in the northern Adriatic Sea and in the highly vulnerable Venetian Lagoon result from a number of simultaneously operating contributions. These include Glacial Isostatic Adjustment (GIA), the global, long-term process arising from interacti...
Published in: | Geophysical Journal International |
---|---|
Main Authors: | , , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Oxford University Press - The Royal Astronomical Society
2023
|
Subjects: | |
Online Access: | http://hdl.handle.net/2122/16235 https://doi.org/10.1093/gji/ggad026 |
id |
ftingv:oai:www.earth-prints.org:2122/16235 |
---|---|
record_format |
openpolar |
spelling |
ftingv:oai:www.earth-prints.org:2122/16235 2023-05-15T16:40:43+02:00 Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet Linsalata, Fernando Melini, Daniele Spada, Giorgio #PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia 2023-06 http://hdl.handle.net/2122/16235 https://doi.org/10.1093/gji/ggad026 en eng Oxford University Press - The Royal Astronomical Society Geophysical Journal International /233 (2023) 0956-540X http://hdl.handle.net/2122/16235 doi:10.1093/gji/ggad026 open article 2023 ftingv https://doi.org/10.1093/gji/ggad026 2023-02-28T23:26:27Z The present-day sea-level variations and vertical movements in the northern Adriatic Sea and in the highly vulnerable Venetian Lagoon result from a number of simultaneously operating contributions. These include Glacial Isostatic Adjustment (GIA), the global, long-term process arising from interactions between the cryosphere, the solid Earth and the oceans in response to the melting of continental ice sheets. Although the GIA contribution in northern Adriatic Sea has been the subject of various investigations so far, significant uncertainties still exist, especially related to the extent and chronology of the Würm Alpine ice sheet and to the rheological profile of the mantle. Here, taking advantage of the recent publication of updated deglaciation chronologies for the far field late-Pleistocene ice sheets and for the near-field alpine ice complex, we produce up-to-date estimates of the present-day rates of GIA-induced relative sea-level variations and vertical displacements in the Venetian Lagoon and in the northern Adriatic Sea, which are compared with GNSS and tide-gauge observations. From high-resolution numerical simulations, we find that GIA is responsible for a complex pattern of geodetic signals across the Po plain and the northern Adriatic Sea. The modeled GIA rates are of the order of fractions of mm yr−1, generally small – but not negligible – compared to the signals observed at local tide gauges and at GNSS sites in the Po plain and facing the Venetian Lagoon. Our results indicate that, while GIA represents a relatively small component among those responsible for present-day land movements and relative sea-level variations in the northern Adriatic Sea, its contribution needs to be taken into account for a correct interpretation of the observed geodetic variations. Published 2039–2052 1T. Struttura della Terra JCR Journal Article in Journal/Newspaper Ice Sheet Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) Geophysical Journal International 233 3 2039 2052 |
institution |
Open Polar |
collection |
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia) |
op_collection_id |
ftingv |
language |
English |
description |
The present-day sea-level variations and vertical movements in the northern Adriatic Sea and in the highly vulnerable Venetian Lagoon result from a number of simultaneously operating contributions. These include Glacial Isostatic Adjustment (GIA), the global, long-term process arising from interactions between the cryosphere, the solid Earth and the oceans in response to the melting of continental ice sheets. Although the GIA contribution in northern Adriatic Sea has been the subject of various investigations so far, significant uncertainties still exist, especially related to the extent and chronology of the Würm Alpine ice sheet and to the rheological profile of the mantle. Here, taking advantage of the recent publication of updated deglaciation chronologies for the far field late-Pleistocene ice sheets and for the near-field alpine ice complex, we produce up-to-date estimates of the present-day rates of GIA-induced relative sea-level variations and vertical displacements in the Venetian Lagoon and in the northern Adriatic Sea, which are compared with GNSS and tide-gauge observations. From high-resolution numerical simulations, we find that GIA is responsible for a complex pattern of geodetic signals across the Po plain and the northern Adriatic Sea. The modeled GIA rates are of the order of fractions of mm yr−1, generally small – but not negligible – compared to the signals observed at local tide gauges and at GNSS sites in the Po plain and facing the Venetian Lagoon. Our results indicate that, while GIA represents a relatively small component among those responsible for present-day land movements and relative sea-level variations in the northern Adriatic Sea, its contribution needs to be taken into account for a correct interpretation of the observed geodetic variations. Published 2039–2052 1T. Struttura della Terra JCR Journal |
author2 |
#PLACEHOLDER_PARENT_METADATA_VALUE# Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Roma1, Roma, Italia |
format |
Article in Journal/Newspaper |
author |
Linsalata, Fernando Melini, Daniele Spada, Giorgio |
spellingShingle |
Linsalata, Fernando Melini, Daniele Spada, Giorgio Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet |
author_facet |
Linsalata, Fernando Melini, Daniele Spada, Giorgio |
author_sort |
Linsalata, Fernando |
title |
Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet |
title_short |
Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet |
title_full |
Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet |
title_fullStr |
Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet |
title_full_unstemmed |
Glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the Alpine ice sheet |
title_sort |
glacial isostatic adjustment in the northern adriatic region: estimates of the contribution from the alpine ice sheet |
publisher |
Oxford University Press - The Royal Astronomical Society |
publishDate |
2023 |
url |
http://hdl.handle.net/2122/16235 https://doi.org/10.1093/gji/ggad026 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
Geophysical Journal International /233 (2023) 0956-540X http://hdl.handle.net/2122/16235 doi:10.1093/gji/ggad026 |
op_rights |
open |
op_doi |
https://doi.org/10.1093/gji/ggad026 |
container_title |
Geophysical Journal International |
container_volume |
233 |
container_issue |
3 |
container_start_page |
2039 |
op_container_end_page |
2052 |
_version_ |
1766031123591200768 |