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Coastal Geology Meets Surveying and GIS
6 items. (Click images to view in lightbox)
Map showing shoreline recession over a period of 55 years
View showing the ten-foot high bank subject to mass wasting due to undermining of non-cohesive sand and gravel by wave action
Ripple marks indicate the edge of the intertidal-subtidal zone
SECI intern collecting topographic data, including timed shoreline observations
A profile of weakly centered soils over non-cohesive Quaternary Alluvial sands and gravels that are subject to undermining by wave action
Spartina (Salt Marsh Grass) holds sandy soils and marks the ordinary high-water mark
All images copyrighted Stephens Environmental Consulting, Inc. Downloading and reuse is prohibited by law.
Where: Calverton
When: 08-14-2017, 09-08-2017
SECI was engaged to assess the vulnerability of three coastal high-value cultural resource sites in Maryland. SECI used a combination of field survey, geological assessment and GIS based techniques to determine the extent, rate and characteristics of shoreline change. In this case, SECI determined that the average rate of shoreline recession was approximately 1ft/year due primarily to the susceptibility of non-cohesive granular soils to wave action and storm surge.