A protocol for a geological sea‐level database

Hijma, M.P.; Engelhart, Simon E.; Törnqvist, Torbjörn E.; Horton, Benjamin P.; Hu, Ping; Hill, David F.

doi:10.1002/9781118452547.ch34

Cited by 79 publications

(142 citation statements)

References 54 publications

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“…RSL rise was relatively constant throughout the mid-to late Holocene with a rate of 0.8±0.0 m/ka from 6 ka to present. The data does not support RSL in this region being above present at any time during the Holocene [68,74].…”

Section: North America Atlantic Coastcontrasting

confidence: 43%

“…Following the rapid drainage of proglacial Lake Agassiz, combined with eustatic sea-level rise, high rates of RSL are observed in the early Holocene from 9 to 7 ka (7.2±0.4 m/ka; Fig. 5d) [69,73,74]. RSL rise was relatively constant throughout the mid-to late Holocene with a rate of 0.8±0.0 m/ka from 6 ka to present.…”

Section: North America Atlantic Coastmentioning

confidence: 87%

“…This method has not been previously adopted to describe spatial variability in RSL change on a global scale and represents a [54,56], Northwest Georgia Strait, Canada [49], Southern Maine, USA [71], New Jersey, USA [43], Louisiana, USA [74], California, USA [49], St. Croix [99], Suriname and Guyana [100 ], Rio Grande do Norte State, Brazil [102], and South Shetland Islands, Antarctica [112,114]. Altitudes and interpretations of sea-level index points (including errors) have not been amended from the original publication (see section 2 for details).…”

Section: Rsl Histories and Application Of Gaussian Process Modelmentioning

confidence: 99%

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

Khan

Ashe

Shaw

et al. 2015

Curr Clim Change Rep

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117

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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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Section: North America Atlantic Coastcontrasting

confidence: 43%

Section: North America Atlantic Coastmentioning

confidence: 87%

Section: Rsl Histories and Application Of Gaussian Process Modelmentioning

confidence: 99%

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

Khan

Ashe

Shaw

et al. 2015

Curr Clim Change Rep

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117

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“…The Atlantic Canada and US Gulf Coast compilations are being published as part of this paper. The methods applied are described in Hijma et al [2015] and further information on the US Gulf Coast compilation is provided in Section 3 of Appendix S1.…”

Section: Datamentioning

confidence: 99%

“…Changes in tidal range will impact the relative sea-level value reconstructed from a given sea-level proxy indicator [Hijma et al, 2015]. None of the SLIPs used here were corrected for changes in the local tidal range [c.f.…”

Section: Datamentioning

confidence: 99%

The contribution of glacial isostatic adjustment to projections of sea‐level change along the Atlantic and Gulf coasts of North America

et al. 2016

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We determine the contribution of glacial isostatic adjustment (GIA) to future relative sea-level change for the North American coastline between Newfoundland and Texas. We infer GIA model parameters using recently compiled and quality-assessed databases of past sea-level changes, including new databases for the United States Gulf Coast and Atlantic Canada. At 13 cities along this coastline, we estimate the GIA contribution to range from a few centimeters (e.g., 3 [−1 to 9] cm Miami) to a few decimeters (e.g., 18 [12][13][14][15][16][17][18][19][20][21][22] cm, Halifax) for the period 2085-2100 relative to 2006-2015 (1− ranges given). We provide estimates of uncertainty in the GIA component using two different methods; the more conservative approach produces total ranges (1− confidence) that vary from 3 to 16 cm for the cities considered. Contributions from ocean steric and dynamic changes as well as those from changes in land ice are also estimated to provide context for the GIA projections. When summing the contributions from all three processes at the 13 cities considered along this coastline, using median or best-estimate values, the GIA signal comprises 5-38% of the total depending on the adopted climate forcing and location. The contributions from ocean dynamic/steric changes and ice mass loss are similar in amplitude but with spatial variation that approximately cancels, resulting in GIA dominating the net spatial variability north of 35 ∘ N.

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Subsidence along the Atlantic Coast of North America: Insights from GPS and late Holocene relative sea level data

Karegar

Dixon

Engelhart

2016

Geophysical Research Letters

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The Atlantic Coast of North America is increasingly affected by flooding associated with tropical and extratropical storms, exacerbated by the combined effects of accelerated sea‐level rise and land subsidence. The region includes the collapsing forebulge of the Laurentide Ice Sheet. High‐quality records of late Holocene relative sea‐level (RSL) rise are now available, allowing separation of long‐term glacial isostatic adjustment‐induced displacement from modern vertical displacement measured by GPS. We compare geological records of late Holocene RSL to present‐day vertical rates from GPS. For many coastal areas there is no significant difference between these independent data. Exceptions occur in areas of recent excessive groundwater extraction, between Virginia (38°N) and South Carolina (32.5°N). The present‐day subsidence rates in these areas are approximately double the long‐term geologic rates, which has important implications for flood mitigation. Tide gauge records, therefore, should be used with caution for studying sea‐level rise in this region.

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A protocol for a geological sea‐level database

Cited by 79 publications

References 54 publications

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

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

The contribution of glacial isostatic adjustment to projections of sea‐level change along the Atlantic and Gulf coasts of North America

Subsidence along the Atlantic Coast of North America: Insights from GPS and late Holocene relative sea level data

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