How Many Carolina Bays?
Carolina bays are elliptical or oval geomorphologic depressions (up to several meters deep), often characterized by the presence of shallow ponds or swamps (wetlands), that occur in the Atlantic Coastal Plain of United States from Delaware to Florida (Johnson 1942; Prouty 1952; Gamble et al. 1977; B...
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ftunivpadovairis:oai:www.research.unipd.it:11577/3235897 2024-02-04T10:04:58+01:00 How Many Carolina Bays? PIOVAN, SILVIA Hodgson M. Piovan, Silvia Hodgson, M. 2016 ELETTRONICO http://hdl.handle.net/11577/3235897 http://agitposter2016.blogspot.it/2016/06/39-how-many-carolina-bays.html eng eng ispartofbook:http://agitposter2016.blogspot.it/2016/06/39-how-many-carolina-bays.html GeoInformatic Forum 2016 http://hdl.handle.net/11577/3235897 http://agitposter2016.blogspot.it/2016/06/39-how-many-carolina-bays.html Carolina bay scale USGS Atlantic Coastal Plain info:eu-repo/semantics/conferenceObject 2016 ftunivpadovairis 2024-01-10T18:01:00Z Carolina bays are elliptical or oval geomorphologic depressions (up to several meters deep), often characterized by the presence of shallow ponds or swamps (wetlands), that occur in the Atlantic Coastal Plain of United States from Delaware to Florida (Johnson 1942; Prouty 1952; Gamble et al. 1977; Bennett and Nelson 1991; Richardson and Gibbons 1993; Sharitz 2003). Glenn (1895) and later Bennett and Nelson (1991) listed the following nine characteristics common to each bay and even if not always present, they seem to define the general physical structure of the bays: oval shape, northwest to southeast orientation, parallelism of their axes, sand rims raised above the general level, interior surface below the general level, the soil inside the rims is different from the external ones, relatively shallow depth, flat sandy bottoms beneath the interior fill and their apparent independence of inflowing and outflowing streams. Explanations of their origin include meteor impacts, subsidence from subsurface karst, and thermokarst or thaw lakes. Quantification of the number of Carolina bays, which may help in forming theoretical explanations for their origin, is also elusive ranging from 10,000 to 500,000. For example, Bennett and Nelson (1991) counted only 2651 in South Carolina and Prouty (1952) estimated some 500,000 exist within the U.S. Prouty’s 500,000 estimate is the most commonly cited reliable estimate. This research demonstrates the large variation in estimates of Carolina bays is a function of mapping scale, the most important factor in enumerating topographic features. The systematic skills from analysts and cartographers in the USGS who mapped Carolina bays on two different scale map series in the National Mapping Program was exploited in this research as a data source. The methodology in this work included 1) an evaluation of the criteria and symbology used for mapping bay and bay-like wetlands on USGS topographic map series (Figure 1) and 2) an enumeration and scaling of observed bay frequency for other ... Conference Object Thermokarst Padua Research Archive (IRIS - Università degli Studi di Padova) |
institution |
Open Polar |
collection |
Padua Research Archive (IRIS - Università degli Studi di Padova) |
op_collection_id |
ftunivpadovairis |
language |
English |
topic |
Carolina bay scale USGS Atlantic Coastal Plain |
spellingShingle |
Carolina bay scale USGS Atlantic Coastal Plain PIOVAN, SILVIA Hodgson M. How Many Carolina Bays? |
topic_facet |
Carolina bay scale USGS Atlantic Coastal Plain |
description |
Carolina bays are elliptical or oval geomorphologic depressions (up to several meters deep), often characterized by the presence of shallow ponds or swamps (wetlands), that occur in the Atlantic Coastal Plain of United States from Delaware to Florida (Johnson 1942; Prouty 1952; Gamble et al. 1977; Bennett and Nelson 1991; Richardson and Gibbons 1993; Sharitz 2003). Glenn (1895) and later Bennett and Nelson (1991) listed the following nine characteristics common to each bay and even if not always present, they seem to define the general physical structure of the bays: oval shape, northwest to southeast orientation, parallelism of their axes, sand rims raised above the general level, interior surface below the general level, the soil inside the rims is different from the external ones, relatively shallow depth, flat sandy bottoms beneath the interior fill and their apparent independence of inflowing and outflowing streams. Explanations of their origin include meteor impacts, subsidence from subsurface karst, and thermokarst or thaw lakes. Quantification of the number of Carolina bays, which may help in forming theoretical explanations for their origin, is also elusive ranging from 10,000 to 500,000. For example, Bennett and Nelson (1991) counted only 2651 in South Carolina and Prouty (1952) estimated some 500,000 exist within the U.S. Prouty’s 500,000 estimate is the most commonly cited reliable estimate. This research demonstrates the large variation in estimates of Carolina bays is a function of mapping scale, the most important factor in enumerating topographic features. The systematic skills from analysts and cartographers in the USGS who mapped Carolina bays on two different scale map series in the National Mapping Program was exploited in this research as a data source. The methodology in this work included 1) an evaluation of the criteria and symbology used for mapping bay and bay-like wetlands on USGS topographic map series (Figure 1) and 2) an enumeration and scaling of observed bay frequency for other ... |
author2 |
Piovan, Silvia Hodgson, M. |
format |
Conference Object |
author |
PIOVAN, SILVIA Hodgson M. |
author_facet |
PIOVAN, SILVIA Hodgson M. |
author_sort |
PIOVAN, SILVIA |
title |
How Many Carolina Bays? |
title_short |
How Many Carolina Bays? |
title_full |
How Many Carolina Bays? |
title_fullStr |
How Many Carolina Bays? |
title_full_unstemmed |
How Many Carolina Bays? |
title_sort |
how many carolina bays? |
publishDate |
2016 |
url |
http://hdl.handle.net/11577/3235897 http://agitposter2016.blogspot.it/2016/06/39-how-many-carolina-bays.html |
genre |
Thermokarst |
genre_facet |
Thermokarst |
op_relation |
ispartofbook:http://agitposter2016.blogspot.it/2016/06/39-how-many-carolina-bays.html GeoInformatic Forum 2016 http://hdl.handle.net/11577/3235897 http://agitposter2016.blogspot.it/2016/06/39-how-many-carolina-bays.html |
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1789973816264359936 |