Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence
The first comprehensive use of wavelet methods to identify non-stationary time-frequency relations between North Atlantic ocean-atmosphere teleconnection patterns and groundwater levels is described. Long-term hydrogeological time series from three boreholes within different aquifers across the UK a...
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ftnerc:oai:nora.nerc.ac.uk:16077 2023-05-15T17:28:21+02:00 Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence Holman, Ian Paul Rivas-Casado, Monica Bloomfield, John P. Gurdak, Jason J. 2011 text http://nora.nerc.ac.uk/id/eprint/16077/ https://nora.nerc.ac.uk/id/eprint/16077/1/Holman%20et%20al%202011%20-%20NORA%20version.pdf http://www.springerlink.com/content/t649208604x176u5/ en eng Springer https://nora.nerc.ac.uk/id/eprint/16077/1/Holman%20et%20al%202011%20-%20NORA%20version.pdf Holman, Ian Paul; Rivas-Casado, Monica; Bloomfield, John P. orcid:0000-0002-5730-1723 Gurdak, Jason J. 2011 Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence. Hydrogeology Journal, 19 (6). 1269-1278. https://doi.org/10.1007/s10040-011-0755-9 <https://doi.org/10.1007/s10040-011-0755-9> Publication - Article PeerReviewed 2011 ftnerc https://doi.org/10.1007/s10040-011-0755-9 2023-02-04T19:30:17Z The first comprehensive use of wavelet methods to identify non-stationary time-frequency relations between North Atlantic ocean-atmosphere teleconnection patterns and groundwater levels is described. Long-term hydrogeological time series from three boreholes within different aquifers across the UK are analysed to identify statistically significant wavelet coherence between the North Atlantic Oscillation, East Atlantic pattern, and the Scandinavia pattern and monthly groundwater-level time series. Wavelet coherence measures the cross-correlation of two time series as a function of frequency, and can be interpreted as a correlation coefficient value. Results not only indicate that there are common statistically significant periods of multiannual-to-decadal wavelet coherence between the three teleconnection indices and groundwater levels in each of the boreholes, but they also show that there are periods when groundwater levels at individual boreholes show distinctly different patterns of significant wavelet coherence with respect to the teleconnection indices. The analyses presented demonstrate the value of wavelet methods in identifying the synchronization of groundwater-level dynamics by non-stationary climate variability on time scales that range from interannual to decadal or longer. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Natural Environment Research Council: NERC Open Research Archive Hydrogeology Journal 19 6 1269 1278 |
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Open Polar |
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Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
description |
The first comprehensive use of wavelet methods to identify non-stationary time-frequency relations between North Atlantic ocean-atmosphere teleconnection patterns and groundwater levels is described. Long-term hydrogeological time series from three boreholes within different aquifers across the UK are analysed to identify statistically significant wavelet coherence between the North Atlantic Oscillation, East Atlantic pattern, and the Scandinavia pattern and monthly groundwater-level time series. Wavelet coherence measures the cross-correlation of two time series as a function of frequency, and can be interpreted as a correlation coefficient value. Results not only indicate that there are common statistically significant periods of multiannual-to-decadal wavelet coherence between the three teleconnection indices and groundwater levels in each of the boreholes, but they also show that there are periods when groundwater levels at individual boreholes show distinctly different patterns of significant wavelet coherence with respect to the teleconnection indices. The analyses presented demonstrate the value of wavelet methods in identifying the synchronization of groundwater-level dynamics by non-stationary climate variability on time scales that range from interannual to decadal or longer. |
format |
Article in Journal/Newspaper |
author |
Holman, Ian Paul Rivas-Casado, Monica Bloomfield, John P. Gurdak, Jason J. |
spellingShingle |
Holman, Ian Paul Rivas-Casado, Monica Bloomfield, John P. Gurdak, Jason J. Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
author_facet |
Holman, Ian Paul Rivas-Casado, Monica Bloomfield, John P. Gurdak, Jason J. |
author_sort |
Holman, Ian Paul |
title |
Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
title_short |
Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
title_full |
Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
title_fullStr |
Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
title_full_unstemmed |
Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
title_sort |
identifying non-stationary groundwater level responses to north atlantic ocean-atmosphere teleconnection patterns using wavelet coherence |
publisher |
Springer |
publishDate |
2011 |
url |
http://nora.nerc.ac.uk/id/eprint/16077/ https://nora.nerc.ac.uk/id/eprint/16077/1/Holman%20et%20al%202011%20-%20NORA%20version.pdf http://www.springerlink.com/content/t649208604x176u5/ |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://nora.nerc.ac.uk/id/eprint/16077/1/Holman%20et%20al%202011%20-%20NORA%20version.pdf Holman, Ian Paul; Rivas-Casado, Monica; Bloomfield, John P. orcid:0000-0002-5730-1723 Gurdak, Jason J. 2011 Identifying non-stationary groundwater level responses to North Atlantic ocean-atmosphere teleconnection patterns using wavelet coherence. Hydrogeology Journal, 19 (6). 1269-1278. https://doi.org/10.1007/s10040-011-0755-9 <https://doi.org/10.1007/s10040-011-0755-9> |
op_doi |
https://doi.org/10.1007/s10040-011-0755-9 |
container_title |
Hydrogeology Journal |
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19 |
container_issue |
6 |
container_start_page |
1269 |
op_container_end_page |
1278 |
_version_ |
1766120968343781376 |