Millennial Scale Development of a Southeastern United States Spit
A prominent 4-km-long and 1-km-wide spit is located at the southern downdrift end of the Grand Strand coastline in NE South Carolina. To reconstruct a millennial scale record of spit evolution, an integrated suite of data collection was employed, including LiDAR data, ground-penetrating radar data g...
Published in: | Journal of Coastal Research |
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Digital Commons @ University of South Florida
2018
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Online Access: | https://digitalcommons.usf.edu/geo_facpub/2200 https://doi.org/10.2112/JCOASTRES-D-16-00005.1 |
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ftusouthflorida:oai:digitalcommons.usf.edu:geo_facpub-3186 2023-07-30T04:05:40+02:00 Millennial Scale Development of a Southeastern United States Spit Wright, E. Kruse, Sarah Forman, S. L. Harris, M. S. 2018-01-01T08:00:00Z https://digitalcommons.usf.edu/geo_facpub/2200 https://doi.org/10.2112/JCOASTRES-D-16-00005.1 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/geo_facpub/2200 doi:10.2112/JCOASTRES-D-16-00005.1 https://doi.org/10.2112/JCOASTRES-D-16-00005.1 School of Geosciences Faculty and Staff Publications Coastal spit ground-penetrating radar North Island optically stimulated luminescence South Carolina Earth Sciences article 2018 ftusouthflorida https://doi.org/10.2112/JCOASTRES-D-16-00005.1 2023-07-13T20:47:09Z A prominent 4-km-long and 1-km-wide spit is located at the southern downdrift end of the Grand Strand coastline in NE South Carolina. To reconstruct a millennial scale record of spit evolution, an integrated suite of data collection was employed, including LiDAR data, ground-penetrating radar data ground truthed by vibracore and split-spoon auger data, and optically stimulated luminescence (OSL) ages. OSL ages suggest initial spit formation began around CE 1100. During the last millennium, the spit records four periods of major advance: three by OSL ages around CE 1105 to 1240, CE 1485 to 1600, CE 1725 to 1835 and one by historical records after CE 1872 until prior to CE 1980. Each section grew by southerly advance of the spit platform, revealed by dipping foreset reflectors, overlain by beach, overwash, and eolian units. Section boundaries are indicated by abrupt OSL age differences, larger ridges (>4.5 m), and, for the middle spit sections, wide downdrift platforms. Episodic growth of the spit may be related to ebb-tidal channel switching, with channel migration establishing platform development or changes in updrift sediment supply. For the central zones, lack of shoreline advance across the downdrift platform suggests a changing sediment supply. The formation of the north and north-central section and associated recurved ridges correspond with times of heightened hurricane activity in the Western North Atlantic, whereas ridges in the south section appear to be related to local hurricane and storm activity. The north-central section had a particularly rapid advance, which is attributed to increased sediment supply. The most recent advance of the spit was also influenced by jetty construction between CE 1890 and 1905. In comparison to the greater amount of research that has been done on longer term coastal geologic evolution and decadal-term shoreline change, intermediate centennial-scale variations were formerly more difficult to age date and study. Determining coastal change on intermediate time scale, ... Article in Journal/Newspaper North Atlantic University of South Florida St. Petersburg: Digital USFSP The Spit ENVELOPE(170.217,170.217,-71.300,-71.300) Journal of Coastal Research 342 255 271 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Coastal spit ground-penetrating radar North Island optically stimulated luminescence South Carolina Earth Sciences |
spellingShingle |
Coastal spit ground-penetrating radar North Island optically stimulated luminescence South Carolina Earth Sciences Wright, E. Kruse, Sarah Forman, S. L. Harris, M. S. Millennial Scale Development of a Southeastern United States Spit |
topic_facet |
Coastal spit ground-penetrating radar North Island optically stimulated luminescence South Carolina Earth Sciences |
description |
A prominent 4-km-long and 1-km-wide spit is located at the southern downdrift end of the Grand Strand coastline in NE South Carolina. To reconstruct a millennial scale record of spit evolution, an integrated suite of data collection was employed, including LiDAR data, ground-penetrating radar data ground truthed by vibracore and split-spoon auger data, and optically stimulated luminescence (OSL) ages. OSL ages suggest initial spit formation began around CE 1100. During the last millennium, the spit records four periods of major advance: three by OSL ages around CE 1105 to 1240, CE 1485 to 1600, CE 1725 to 1835 and one by historical records after CE 1872 until prior to CE 1980. Each section grew by southerly advance of the spit platform, revealed by dipping foreset reflectors, overlain by beach, overwash, and eolian units. Section boundaries are indicated by abrupt OSL age differences, larger ridges (>4.5 m), and, for the middle spit sections, wide downdrift platforms. Episodic growth of the spit may be related to ebb-tidal channel switching, with channel migration establishing platform development or changes in updrift sediment supply. For the central zones, lack of shoreline advance across the downdrift platform suggests a changing sediment supply. The formation of the north and north-central section and associated recurved ridges correspond with times of heightened hurricane activity in the Western North Atlantic, whereas ridges in the south section appear to be related to local hurricane and storm activity. The north-central section had a particularly rapid advance, which is attributed to increased sediment supply. The most recent advance of the spit was also influenced by jetty construction between CE 1890 and 1905. In comparison to the greater amount of research that has been done on longer term coastal geologic evolution and decadal-term shoreline change, intermediate centennial-scale variations were formerly more difficult to age date and study. Determining coastal change on intermediate time scale, ... |
format |
Article in Journal/Newspaper |
author |
Wright, E. Kruse, Sarah Forman, S. L. Harris, M. S. |
author_facet |
Wright, E. Kruse, Sarah Forman, S. L. Harris, M. S. |
author_sort |
Wright, E. |
title |
Millennial Scale Development of a Southeastern United States Spit |
title_short |
Millennial Scale Development of a Southeastern United States Spit |
title_full |
Millennial Scale Development of a Southeastern United States Spit |
title_fullStr |
Millennial Scale Development of a Southeastern United States Spit |
title_full_unstemmed |
Millennial Scale Development of a Southeastern United States Spit |
title_sort |
millennial scale development of a southeastern united states spit |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2018 |
url |
https://digitalcommons.usf.edu/geo_facpub/2200 https://doi.org/10.2112/JCOASTRES-D-16-00005.1 |
long_lat |
ENVELOPE(170.217,170.217,-71.300,-71.300) |
geographic |
The Spit |
geographic_facet |
The Spit |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
School of Geosciences Faculty and Staff Publications |
op_relation |
https://digitalcommons.usf.edu/geo_facpub/2200 doi:10.2112/JCOASTRES-D-16-00005.1 https://doi.org/10.2112/JCOASTRES-D-16-00005.1 |
op_doi |
https://doi.org/10.2112/JCOASTRES-D-16-00005.1 |
container_title |
Journal of Coastal Research |
container_volume |
342 |
container_start_page |
255 |
op_container_end_page |
271 |
_version_ |
1772817735725613056 |