The sea-level fingerprint of the 8.2 ka climate event

Kendall, Roblyn A.; Mitrovica, J. X.; Milne, Glenn A.; Törnqvist, Torbjörn E.; Li, Yongxiang

doi:10.1130/g24550a.1

Cited by 91 publications

(63 citation statements)

References 21 publications

(41 reference statements)

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“…En s'appuyant sur plusieurs modèles de déglaciation établis avec précision pour la période Holocène, K. Lambeck (1997) a montré que des oscillations de plusieurs mètres en seulement quelques siècles étaient difficilement envisageables. Plus récemment, R.A. Kendall et al (2008) se sont intéressés à l'impact sur le niveau marin qu'aurait entraîné la vidange brutale du lac Aggasiz-Ojibway vers 8 200 cal.BP, considéré comme un événement majeur de la phase de déglaciation holocène. Pour les auteurs, cet épisode n'aurait produit qu'une élévation globale du niveau des mers d'environ 40 cm.…”

Section: Discussionunclassified

Colmatage sédimentaire des marais maritimes et variations relatives du niveau marin au cours des 6 000 dernières années en rade de Brest (Finistère)

Stéphan¹

2011

norois

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NoroisEnvironnement, aménagement, société | 2011Géoarchéologie dans l'Ouest de la FranceColmatage sédimentaire des marais maritimes et variations relatives du niveau marin au cours des 6 000 dernières années en rade de Brest (finistère) De nombreuses études des variations relatives du niveau marin à l'Holocène ont été réalisées sur les côtes françaises de l'Atlantique et de la Manche (Fairbridge, 1961 ;

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Section: Discussionunclassified

Colmatage sédimentaire des marais maritimes et variations relatives du niveau marin au cours des 6 000 dernières années en rade de Brest (Finistère)

Stéphan¹

2011

norois

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“…Reconstructions of Holocene relative sea level (RSL) provide important constraints for calibrating geophysical models of Earth's rheology and glacial-isostatic adjustment (GIA) [1][2][3], estimating ice-equivalent meltwater input [4][5][6][7], and fingerprinting sources of ice mass loss [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Holocene Relative Sea-Level Changes from Near-, Intermediate-, and Far-Field Locations

Khan

Ashe

Shaw

et al. 2015

Curr Clim Change Rep

125

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Holocene relative sea-level (RSL) records exhibit spatial and temporal variability that arises mainly from the interaction of eustatic (land ice volume and thermal expansion) and isostatic (glacio-and hydro-) factors. We fit RSL histories from near-, intermediate-, and far-field locations with noisy-input Gaussian process models to assess rates of RSL change. Records from near-field regions (e.g., Antarctica, Greenland, Canada, Sweden, and Scotland) reveal a complex pattern of RSL fall from a maximum marine limit due to the net effect of eustatic sea-level rise and glacio-isostatic uplift with rates of RSL fall as great as −69±9 m/ka. Intermediatefield regions (e.g., mid-Atlantic and Pacific coasts of the USA, Netherlands, Southern France, St. Croix) display variable rates of RSL rise from the cumulative effect of eustatic and isostatic factors. Fast rates of RSL rise (up to 10±1 m/ka) are found in the early Holocene in regions near the center of forebulge collapse. Far-field RSL records exhibit a midHolocene highstand, the timing (between 8 and 4 ka) and magnitude (between <1 and 6 m) of which varies among South America, Africa, Asia, and Oceania regions.

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“…AMS = accelerator mass spectrometry. *Calibrated with the IntCal13 calibration curve (Reimer et al 2013) Kendall et al (2008).…”

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Relative sea-level data from southwest Scotland constrain meltwater-driven sea-level jumps prior to the 8.2 kyr BP event

Lawrence

Long

Gehrels

et al. 2016

Quaternary Science Reviews

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. Abstract 13The most significant climate cooling of the Holocene is centred on 8.2 kyr BP (the '8.2 14 event'). Its cause is widely attributed to an abrupt slowdown of the Atlantic Meridional providing evidence of at least three distinct episodes of enhanced meltwater discharge from 27 the decaying LIS prior to the 8.2 event. Our observations can be used to test the fidelity of 28 both climate and ice-sheet models in simulating abrupt change during the early Holocene. and 2) and is registered as an abrupt cooling of ~3.3 ± 1.1 °C that lasted for 160 yrs (Kobashi 35 et al., 2007;Thomas et al., 2007). The widely cited (e.g. Alley et al., 1997; De Vernal et al., 36 1997;Barber et al., 1999;Törnqvist and Hijma, 2012) The Cree Estuary is situated on the northern shores of the Solway Firth (N 54°51', W 4°30'). 135The River Cree is tidal from Newton Stewart and drains southwards through the Cree coastal within the broad timeframe of the 8.2 event, although not fully attributed to the event itself. 150These sediments provide the basis for this study. 158Fifty hand-cores were sunk along three transects. Sediments were classified with reference to Laboratory methods 171We conducted microfossil (diatom) analyses in order to determine estimates of past sea level. 172Samples were prepared using standard techniques (Palmer and Abbott, 1986) where SWLI n is the standard water level index for a given sample n, h n is the elevation of a 280This novel approach to sampling is an attempt to reduce the uncertainties of the 281 reconstruction given the wide uncertainties in time and space of the RSL indicators relative to 282 the decimetre and decadal-to-centennial scale of DCP events that we seek to identify. Inferring the timing of abrupt North Atlantic events 309We infer the onset of the two-step increases recorded in the surface δ 18 O record from the the critical time interval compared to the nine in MD03-2665 properties that is coeval with the onset of the δ 13 C excursion. To infer the onset of the second 342 anomaly, we have no choice but to use the δ 18 O record because the δ 13 C series records a 343 broad minimum spanning several centuries rather than two distinct events. 344From proximal to the former LIS margin we also include the timing of three DCPs Results 358 Lithostratigraphy 360Our lithostratigraphic survey confirms the complex sequence of minerogenic silts and 361 laterally extensive beds of organic silt that were originally mapped by Smith et al. (2003a). 362...

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The sea-level fingerprint of the 8.2 ka climate event

Cited by 91 publications

References 21 publications

Colmatage sédimentaire des marais maritimes et variations relatives du niveau marin au cours des 6 000 dernières années en rade de Brest (Finistère)

Colmatage sédimentaire des marais maritimes et variations relatives du niveau marin au cours des 6 000 dernières années en rade de Brest (Finistère)

Holocene Relative Sea-Level Changes from Near-, Intermediate-, and Far-Field Locations

Relative sea-level data from southwest Scotland constrain meltwater-driven sea-level jumps prior to the 8.2 kyr BP event

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