Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskning

Standard

Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data. / Hede, Mikkel Ulfeldt; Bendixen, Mette; Clemmensen, Lars B; Kroon, Aart; Nielsen, Lars.

2013. Abstract fra EGU General Assembly 2013, Vienna, Østrig.

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskning

Harvard

Hede, MU, Bendixen, M, Clemmensen, LB, Kroon, A & Nielsen, L 2013, 'Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data', EGU General Assembly 2013, Vienna, Østrig, 07/04/2013 - 12/04/2013.

APA

Hede, M. U., Bendixen, M., Clemmensen, L. B., Kroon, A., & Nielsen, L. (2013). Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data. Abstract fra EGU General Assembly 2013, Vienna, Østrig.

Vancouver

Hede MU, Bendixen M, Clemmensen LB, Kroon A, Nielsen L. Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data. 2013. Abstract fra EGU General Assembly 2013, Vienna, Østrig.

Author

Hede, Mikkel Ulfeldt ; Bendixen, Mette ; Clemmensen, Lars B ; Kroon, Aart ; Nielsen, Lars. / Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data. Abstract fra EGU General Assembly 2013, Vienna, Østrig.1 s.

Bibtex

@conference{557ce9747a1f4b85a5d316cafc5630ab,
title = "Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data",
abstract = "Estimates of Holocene sea-level variations have been presented in a range of studies based on different approaches, including interpretation of internal beach ridge characteristics from ground-penetrating radar (GPR) and geomorphological data.We present GPR data and geomorphological observations collected across beach ridge deposits from Feddet, eastern Denmark, and resolve past relative sea level with a relatively high precision. Feddet is a spit located in Faxe Bay (western part of the Baltic Sea) close to the current 0-isobase of isostatic rebound and is considered a key locality for studies of sea level variation and vertical land movement in southern Scandinavia in response to unloading after the last glaciation.We have tested the validity of downlap points, which marks the transition from beach to upper shoreface as sea-level markers. The test is based on comparative analyses of independent GPR and geomorphologic datacollected across the recent and sub-recent beach ridge deposits. The data analyses include coastal topography, internal dips of beach ridge layers, and sea-level measurements. A clear change in characteristic layer dip is observed between beach face and upper shoreface in both the present beach face and upper shoreface deposits and in the interpreted beach face and upper shoreface GPR reflections. The break point marks the present transition from beach to upper shoreface and coincides with actual sea level within a few centimetres. Furthermore, our observations indicate that downlap points of deposits formed under both relatively high and low water levels are preserved and are identified in GPR reflection data.Thus, records of these sea-level markers constrain the local relative sea level history during the Holocene. Downlap points identified in GPR data across other microtidal beach ridge systems can also constitute markers of past relative sea level at the time of deposition. Comparison of these relative sea-level curves from different localities can be used to infer the pattern of isostatic rebound and local tectonic movements.",
author = "Hede, {Mikkel Ulfeldt} and Mette Bendixen and Clemmensen, {Lars B} and Aart Kroon and Lars Nielsen",
note = "Abstract presented at EGU General Assembly 2013, Vienna, Austria, 7-12 April; null ; Conference date: 07-04-2013 Through 12-04-2013",
year = "2013",
language = "English",

}

RIS

TY - ABST

T1 - Holocene relative sea level variations at the spit system Feddet (Denmark) resolved by ground-penetrating radar and geomorphological data

AU - Hede, Mikkel Ulfeldt

AU - Bendixen, Mette

AU - Clemmensen, Lars B

AU - Kroon, Aart

AU - Nielsen, Lars

N1 - Abstract presented at EGU General Assembly 2013, Vienna, Austria, 7-12 April

PY - 2013

Y1 - 2013

N2 - Estimates of Holocene sea-level variations have been presented in a range of studies based on different approaches, including interpretation of internal beach ridge characteristics from ground-penetrating radar (GPR) and geomorphological data.We present GPR data and geomorphological observations collected across beach ridge deposits from Feddet, eastern Denmark, and resolve past relative sea level with a relatively high precision. Feddet is a spit located in Faxe Bay (western part of the Baltic Sea) close to the current 0-isobase of isostatic rebound and is considered a key locality for studies of sea level variation and vertical land movement in southern Scandinavia in response to unloading after the last glaciation.We have tested the validity of downlap points, which marks the transition from beach to upper shoreface as sea-level markers. The test is based on comparative analyses of independent GPR and geomorphologic datacollected across the recent and sub-recent beach ridge deposits. The data analyses include coastal topography, internal dips of beach ridge layers, and sea-level measurements. A clear change in characteristic layer dip is observed between beach face and upper shoreface in both the present beach face and upper shoreface deposits and in the interpreted beach face and upper shoreface GPR reflections. The break point marks the present transition from beach to upper shoreface and coincides with actual sea level within a few centimetres. Furthermore, our observations indicate that downlap points of deposits formed under both relatively high and low water levels are preserved and are identified in GPR reflection data.Thus, records of these sea-level markers constrain the local relative sea level history during the Holocene. Downlap points identified in GPR data across other microtidal beach ridge systems can also constitute markers of past relative sea level at the time of deposition. Comparison of these relative sea-level curves from different localities can be used to infer the pattern of isostatic rebound and local tectonic movements.

AB - Estimates of Holocene sea-level variations have been presented in a range of studies based on different approaches, including interpretation of internal beach ridge characteristics from ground-penetrating radar (GPR) and geomorphological data.We present GPR data and geomorphological observations collected across beach ridge deposits from Feddet, eastern Denmark, and resolve past relative sea level with a relatively high precision. Feddet is a spit located in Faxe Bay (western part of the Baltic Sea) close to the current 0-isobase of isostatic rebound and is considered a key locality for studies of sea level variation and vertical land movement in southern Scandinavia in response to unloading after the last glaciation.We have tested the validity of downlap points, which marks the transition from beach to upper shoreface as sea-level markers. The test is based on comparative analyses of independent GPR and geomorphologic datacollected across the recent and sub-recent beach ridge deposits. The data analyses include coastal topography, internal dips of beach ridge layers, and sea-level measurements. A clear change in characteristic layer dip is observed between beach face and upper shoreface in both the present beach face and upper shoreface deposits and in the interpreted beach face and upper shoreface GPR reflections. The break point marks the present transition from beach to upper shoreface and coincides with actual sea level within a few centimetres. Furthermore, our observations indicate that downlap points of deposits formed under both relatively high and low water levels are preserved and are identified in GPR reflection data.Thus, records of these sea-level markers constrain the local relative sea level history during the Holocene. Downlap points identified in GPR data across other microtidal beach ridge systems can also constitute markers of past relative sea level at the time of deposition. Comparison of these relative sea-level curves from different localities can be used to infer the pattern of isostatic rebound and local tectonic movements.

M3 - Conference abstract for conference

Y2 - 7 April 2013 through 12 April 2013

ER -

ID: 46845542