Magnetic tidal signals in the southern Indian Ocean ...
<!--!introduction!--> We analyze recordings of four geomagnetic observatories located in the French sub-antarctic and antarctic territories: Amsterdam Island (AMS), Crozet (CZT), Kerguelen (PAF), Durmont d'Urville (DRV). These recordings cover several decades of the geomagnetic field vari...
Main Author: | |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
GFZ German Research Centre for Geosciences
2023
|
Subjects: | |
Online Access: | https://dx.doi.org/10.57757/iugg23-3935 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019898 |
id |
ftdatacite:10.57757/iugg23-3935 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.57757/iugg23-3935 2023-07-23T04:13:15+02:00 Magnetic tidal signals in the southern Indian Ocean ... Wardinski, Ingo 2023 https://dx.doi.org/10.57757/iugg23-3935 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019898 unknown GFZ German Research Centre for Geosciences Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Article ConferencePaper Oral 2023 ftdatacite https://doi.org/10.57757/iugg23-3935 2023-07-03T21:58:51Z <!--!introduction!--> We analyze recordings of four geomagnetic observatories located in the French sub-antarctic and antarctic territories: Amsterdam Island (AMS), Crozet (CZT), Kerguelen (PAF), Durmont d'Urville (DRV). These recordings cover several decades of the geomagnetic field variation sampled every minute. We report results of a classical spectral analysis, where we estimate the spectral content of these series. Unlike previous studies, we attempt to identify the inter-annual variability of magnetic signals generated by Ocean tides, therefore we analyze monthly sets of the magnetic field recordings. We identify different tidal constituents, i.e. diurnal, semi-diurnal and short-periodic shallow water tides. Almost all show a long-term variability (seasonality) in their strength, particularly the shallow-water MK3 tide at Amsterdam Island (AMS), but also diurnal and semi-diurnal tides such as O1, K1 and M2. Causes of the long-term variability of shallow water tides and the diurnal and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... Conference Object Amsterdam Island Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) Antarctic Indian Kerguelen |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
description |
<!--!introduction!--> We analyze recordings of four geomagnetic observatories located in the French sub-antarctic and antarctic territories: Amsterdam Island (AMS), Crozet (CZT), Kerguelen (PAF), Durmont d'Urville (DRV). These recordings cover several decades of the geomagnetic field variation sampled every minute. We report results of a classical spectral analysis, where we estimate the spectral content of these series. Unlike previous studies, we attempt to identify the inter-annual variability of magnetic signals generated by Ocean tides, therefore we analyze monthly sets of the magnetic field recordings. We identify different tidal constituents, i.e. diurnal, semi-diurnal and short-periodic shallow water tides. Almost all show a long-term variability (seasonality) in their strength, particularly the shallow-water MK3 tide at Amsterdam Island (AMS), but also diurnal and semi-diurnal tides such as O1, K1 and M2. Causes of the long-term variability of shallow water tides and the diurnal and ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
format |
Conference Object |
author |
Wardinski, Ingo |
spellingShingle |
Wardinski, Ingo Magnetic tidal signals in the southern Indian Ocean ... |
author_facet |
Wardinski, Ingo |
author_sort |
Wardinski, Ingo |
title |
Magnetic tidal signals in the southern Indian Ocean ... |
title_short |
Magnetic tidal signals in the southern Indian Ocean ... |
title_full |
Magnetic tidal signals in the southern Indian Ocean ... |
title_fullStr |
Magnetic tidal signals in the southern Indian Ocean ... |
title_full_unstemmed |
Magnetic tidal signals in the southern Indian Ocean ... |
title_sort |
magnetic tidal signals in the southern indian ocean ... |
publisher |
GFZ German Research Centre for Geosciences |
publishDate |
2023 |
url |
https://dx.doi.org/10.57757/iugg23-3935 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019898 |
geographic |
Antarctic Indian Kerguelen |
geographic_facet |
Antarctic Indian Kerguelen |
genre |
Amsterdam Island Antarc* Antarctic |
genre_facet |
Amsterdam Island Antarc* Antarctic |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.57757/iugg23-3935 |
_version_ |
1772177786268549120 |