Decadal behavior of tidal inlet-associated beach systems, Northwest Ireland, in relation to climate forcing

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Abstract

Shoreline and ebb channel evolution between 1834 and 2008 was recorded at three embayed beaches in northwest Ireland with historically stable relative sea level. The beaches are geologically constrained within bedrock valleys and have minimal contemporary sediment input. Their behavior is strongly influenced by tidal-inlet dynamics of adjacent estuaries; major observed changes in shoreline position are linked to fluctuations in inlet ebb-channel orientation. Comparison of the available historical record of geomorphological change with instrumental and proxy climate records suggests that inlet changes may be driven by fluctuations in average storminess: periods of high storminess perturb the inlet system, causing major changes in ebbchannel configuration, after which sediment redistribution returns the system to its former state over a prolonged period (years to decades).
LanguageEnglish
Pages38-51
JournalJournal of Sedimentary Research
Volume81
DOIs
Publication statusPublished - 28 Nov 2011

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tidal inlet
climate forcing
shoreline
beach
proxy climate record
historical record
sediment
bedrock
estuary
sea level
valley
comparison

Cite this

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title = "Decadal behavior of tidal inlet-associated beach systems, Northwest Ireland, in relation to climate forcing",
abstract = "Shoreline and ebb channel evolution between 1834 and 2008 was recorded at three embayed beaches in northwest Ireland with historically stable relative sea level. The beaches are geologically constrained within bedrock valleys and have minimal contemporary sediment input. Their behavior is strongly influenced by tidal-inlet dynamics of adjacent estuaries; major observed changes in shoreline position are linked to fluctuations in inlet ebb-channel orientation. Comparison of the available historical record of geomorphological change with instrumental and proxy climate records suggests that inlet changes may be driven by fluctuations in average storminess: periods of high storminess perturb the inlet system, causing major changes in ebbchannel configuration, after which sediment redistribution returns the system to its former state over a prolonged period (years to decades).",
author = "Marianne O'Connor and Andrew Cooper and Derek Jackson",
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T1 - Decadal behavior of tidal inlet-associated beach systems, Northwest Ireland, in relation to climate forcing

AU - O'Connor, Marianne

AU - Cooper, Andrew

AU - Jackson, Derek

PY - 2011/11/28

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N2 - Shoreline and ebb channel evolution between 1834 and 2008 was recorded at three embayed beaches in northwest Ireland with historically stable relative sea level. The beaches are geologically constrained within bedrock valleys and have minimal contemporary sediment input. Their behavior is strongly influenced by tidal-inlet dynamics of adjacent estuaries; major observed changes in shoreline position are linked to fluctuations in inlet ebb-channel orientation. Comparison of the available historical record of geomorphological change with instrumental and proxy climate records suggests that inlet changes may be driven by fluctuations in average storminess: periods of high storminess perturb the inlet system, causing major changes in ebbchannel configuration, after which sediment redistribution returns the system to its former state over a prolonged period (years to decades).

AB - Shoreline and ebb channel evolution between 1834 and 2008 was recorded at three embayed beaches in northwest Ireland with historically stable relative sea level. The beaches are geologically constrained within bedrock valleys and have minimal contemporary sediment input. Their behavior is strongly influenced by tidal-inlet dynamics of adjacent estuaries; major observed changes in shoreline position are linked to fluctuations in inlet ebb-channel orientation. Comparison of the available historical record of geomorphological change with instrumental and proxy climate records suggests that inlet changes may be driven by fluctuations in average storminess: periods of high storminess perturb the inlet system, causing major changes in ebbchannel configuration, after which sediment redistribution returns the system to its former state over a prolonged period (years to decades).

U2 - 10.2110/jsr.2011.3

DO - 10.2110/jsr.2011.3

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EP - 51

JO - Journal of Sedimentary Research

T2 - Journal of Sedimentary Research

JF - Journal of Sedimentary Research

SN - 1527-1404

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