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Conference Paper: Inception of a global atlas of Holocene sea levels
Title | Inception of a global atlas of Holocene sea levels |
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Authors | |
Issue Date | 2020 |
Publisher | European Geophysical Union. |
Citation | European Geosciences Union (EGU) General Assembly 2020, Online Meetibng, Vienna, Austria, 4-8 May 2020, paper no. EGU2020-12489 How to Cite? |
Abstract | Determining the rates, mechanisms and geographic variability of sea-level change is a priority science question for the next decade of ocean research. To address these research priorities, the HOLocene SEA-level variability (HOLSEA) working group is developing the first standardized global synthesis of Holocene relative sea-level data to: (1) estimate the magnitudes and rates of global mean sea-level change during the Holocene; and (2) identify trends in spatial variability and decipher the processes responsible for geographic differences in relative sea-level change.
Here we present the efforts of the working group to compile the database, which includes over 12,000 sea-level index points and limiting data from a range of different indicators across seven continents from the Last Glacial Maximum to present. We follow a standard protocol that incorporates full consideration of vertical and temporal uncertainty for each sea-level index point, including uncertainties associated with the relationship of each indicator to past sea-level and the methods used to date each indicator. We highlight important challenges overcome to aggregate the standardized global synthesis, and discuss those that still remain. Finally. we apply a spatio-temporal empirical hierarchical statistical model to the database to estimate global sea-level variability and spatial patterns in relative sea level and its rates of change, and consider their driving mechanisms. Long-term, this effort will enhance predictions of 21st century sea-level rise, and provide a vital contribution to the assessment of natural hazards with respect to sea-level rise. |
Description | Session CL5.4: Climate Data Compilations, Homogenization and Analysis of Variability, Trends and Extremes - article no. EGU2020-12489 |
Persistent Identifier | http://hdl.handle.net/10722/287068 |
DC Field | Value | Language |
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dc.contributor.author | Khan, NS | - |
dc.contributor.author | Ashe, E | - |
dc.contributor.author | Kopp, R | - |
dc.contributor.author | Horton, B | - |
dc.contributor.author | HOLSEA working group | - |
dc.date.accessioned | 2020-09-10T09:28:01Z | - |
dc.date.available | 2020-09-10T09:28:01Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | European Geosciences Union (EGU) General Assembly 2020, Online Meetibng, Vienna, Austria, 4-8 May 2020, paper no. EGU2020-12489 | - |
dc.identifier.uri | http://hdl.handle.net/10722/287068 | - |
dc.description | Session CL5.4: Climate Data Compilations, Homogenization and Analysis of Variability, Trends and Extremes - article no. EGU2020-12489 | - |
dc.description.abstract | Determining the rates, mechanisms and geographic variability of sea-level change is a priority science question for the next decade of ocean research. To address these research priorities, the HOLocene SEA-level variability (HOLSEA) working group is developing the first standardized global synthesis of Holocene relative sea-level data to: (1) estimate the magnitudes and rates of global mean sea-level change during the Holocene; and (2) identify trends in spatial variability and decipher the processes responsible for geographic differences in relative sea-level change. Here we present the efforts of the working group to compile the database, which includes over 12,000 sea-level index points and limiting data from a range of different indicators across seven continents from the Last Glacial Maximum to present. We follow a standard protocol that incorporates full consideration of vertical and temporal uncertainty for each sea-level index point, including uncertainties associated with the relationship of each indicator to past sea-level and the methods used to date each indicator. We highlight important challenges overcome to aggregate the standardized global synthesis, and discuss those that still remain. Finally. we apply a spatio-temporal empirical hierarchical statistical model to the database to estimate global sea-level variability and spatial patterns in relative sea level and its rates of change, and consider their driving mechanisms. Long-term, this effort will enhance predictions of 21st century sea-level rise, and provide a vital contribution to the assessment of natural hazards with respect to sea-level rise. | - |
dc.language | eng | - |
dc.publisher | European Geophysical Union. | - |
dc.relation.ispartof | European Geophysical Union (EGU) General Assembly 2020, Online | - |
dc.title | Inception of a global atlas of Holocene sea levels | - |
dc.type | Conference_Paper | - |
dc.identifier.email | Khan, NS: nskhan@hku.hk | - |
dc.identifier.authority | Khan, NS=rp02561 | - |
dc.identifier.doi | 10.5194/egusphere-egu2020-12489 | - |
dc.identifier.hkuros | 313264 | - |