The impact of sea-level rise on tidal characteristics around Australia
<p>An established tidal model, validated for present-day conditions, is used to investigate the effect of large levels of sea-level rise (SLR) on tidal characteristics around Australasia. SLR is implemented through a uniform depth increase across the model domain, with a comparison between the...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2019-02-01
|
| Series: | Ocean Science |
| Online Access: | https://www.ocean-sci.net/15/147/2019/os-15-147-2019.pdf |
| _version_ | 1818910332577382400 |
|---|---|
| author | A. Harker A. Harker J. A. M. Green M. Schindelegger S.-B. Wilmes |
| author_facet | A. Harker A. Harker J. A. M. Green M. Schindelegger S.-B. Wilmes |
| author_sort | A. Harker |
| collection | DOAJ |
| description | <p>An established tidal model, validated for present-day conditions, is used to
investigate the effect of large levels of sea-level rise (SLR) on tidal
characteristics around Australasia. SLR is implemented through a uniform
depth increase across the model domain, with a comparison between the
implementation of coastal defences or allowing low-lying land to flood. The
complex spatial response of the semi-diurnal M<span class="inline-formula"><sub>2</sub></span> constituent does not
appear to be linear with the imposed SLR. The most predominant features of
this response are the generation of new amphidromic systems within the Gulf
of Carpentaria and large-amplitude changes in the Arafura Sea, to the north
of Australia, and within embayments along Australia's north-west coast.
Dissipation from M<span class="inline-formula"><sub>2</sub></span> notably decreases along north-west Australia but is
enhanced around New Zealand and the island chains to the north. The diurnal
constituent, K<span class="inline-formula"><sub>1</sub></span>, is found to decrease in amplitude in the Gulf of
Carpentaria when flooding is allowed. Coastal flooding has a profound impact
on the response of tidal amplitudes to SLR by creating local regions of
increased tidal dissipation and altering the coastal topography. Our results
also highlight the necessity for regional models to use correct open boundary
conditions reflecting the global tidal changes in response to SLR.</p> |
| first_indexed | 2024-12-19T22:41:08Z |
| format | Article |
| id | doaj.art-ac234e3a55384aa98a4d34e2c5ea7aeb |
| institution | Directory Open Access Journal |
| issn | 1812-0784 1812-0792 |
| language | English |
| last_indexed | 2024-12-19T22:41:08Z |
| publishDate | 2019-02-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Ocean Science |
| spelling | doaj.art-ac234e3a55384aa98a4d34e2c5ea7aeb2022-12-21T20:03:04ZengCopernicus PublicationsOcean Science1812-07841812-07922019-02-011514715910.5194/os-15-147-2019The impact of sea-level rise on tidal characteristics around AustraliaA. Harker0A. Harker1J. A. M. Green2M. Schindelegger3S.-B. Wilmes4Institute of Geodesy and Geoinformation, University of Bonn, Bonn, GermanySchool of Ocean Sciences, Bangor University, Menai Bridge, UKSchool of Ocean Sciences, Bangor University, Menai Bridge, UKInstitute of Geodesy and Geoinformation, University of Bonn, Bonn, GermanySchool of Ocean Sciences, Bangor University, Menai Bridge, UK<p>An established tidal model, validated for present-day conditions, is used to investigate the effect of large levels of sea-level rise (SLR) on tidal characteristics around Australasia. SLR is implemented through a uniform depth increase across the model domain, with a comparison between the implementation of coastal defences or allowing low-lying land to flood. The complex spatial response of the semi-diurnal M<span class="inline-formula"><sub>2</sub></span> constituent does not appear to be linear with the imposed SLR. The most predominant features of this response are the generation of new amphidromic systems within the Gulf of Carpentaria and large-amplitude changes in the Arafura Sea, to the north of Australia, and within embayments along Australia's north-west coast. Dissipation from M<span class="inline-formula"><sub>2</sub></span> notably decreases along north-west Australia but is enhanced around New Zealand and the island chains to the north. The diurnal constituent, K<span class="inline-formula"><sub>1</sub></span>, is found to decrease in amplitude in the Gulf of Carpentaria when flooding is allowed. Coastal flooding has a profound impact on the response of tidal amplitudes to SLR by creating local regions of increased tidal dissipation and altering the coastal topography. Our results also highlight the necessity for regional models to use correct open boundary conditions reflecting the global tidal changes in response to SLR.</p>https://www.ocean-sci.net/15/147/2019/os-15-147-2019.pdf |
| spellingShingle | A. Harker A. Harker J. A. M. Green M. Schindelegger S.-B. Wilmes The impact of sea-level rise on tidal characteristics around Australia Ocean Science |
| title | The impact of sea-level rise on tidal characteristics around Australia |
| title_full | The impact of sea-level rise on tidal characteristics around Australia |
| title_fullStr | The impact of sea-level rise on tidal characteristics around Australia |
| title_full_unstemmed | The impact of sea-level rise on tidal characteristics around Australia |
| title_short | The impact of sea-level rise on tidal characteristics around Australia |
| title_sort | impact of sea level rise on tidal characteristics around australia |
| url | https://www.ocean-sci.net/15/147/2019/os-15-147-2019.pdf |
| work_keys_str_mv | AT aharker theimpactofsealevelriseontidalcharacteristicsaroundaustralia AT aharker theimpactofsealevelriseontidalcharacteristicsaroundaustralia AT jamgreen theimpactofsealevelriseontidalcharacteristicsaroundaustralia AT mschindelegger theimpactofsealevelriseontidalcharacteristicsaroundaustralia AT sbwilmes theimpactofsealevelriseontidalcharacteristicsaroundaustralia AT aharker impactofsealevelriseontidalcharacteristicsaroundaustralia AT aharker impactofsealevelriseontidalcharacteristicsaroundaustralia AT jamgreen impactofsealevelriseontidalcharacteristicsaroundaustralia AT mschindelegger impactofsealevelriseontidalcharacteristicsaroundaustralia AT sbwilmes impactofsealevelriseontidalcharacteristicsaroundaustralia |