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Preliminary reconnaissance inventory map data of landslides and related features, South Manitou Island, Sleeping Bear Dunes National Lakeshore, Michigan

Dates

Publication Date
Start Date
2012-04-04
End Date
2016-03-06

Citation

Ashland, F.X., 2022, Preliminary reconnaissance inventory map data of landslides and related features, South Manitou Island, Sleeping Bear Dunes National Lakeshore, Michigan: U.S. Geological Survey data release, https://doi.org/10.5066/P9SQWQ37.

Summary

Pluvials can have dramatic impacts on the shoreline bluffs of Lake Michigan due to increases in both shallow subsurface moisture conditions related to the prolonged wet weather pattern and wave erosion as the lake level rises. These changes can result in an increased frequency and magnitude of slope failures. During the most recent pluvial, the monthly average level of Lake Michigan rose 1.9 m from a record low in January 2013 to a near record high in June-July 2020. To assess the impacts on coastal bluffs from slope failures during the recent pluvial, an inventory of landslides was completed, including slope failures active during the early part of the pluvial, on the coastal bluffs of South Manitou Island, part of the Sleeping Bear [...]

Contacts

Point of Contact :
Francis Ashland
Originator :
Francis Ashland
Metadata Contact :
Francis Ashland
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Florence Bascom Geoscience Center
USGS Mission Area :
Natural Hazards

Attached Files

Click on title to download individual files attached to this item.

SMI_Inventory_Shapefiles.zip 343.73 KB application/zip
Metadata_Shapefiles.zip 170.39 KB application/zip

Purpose

The purpose of this mapping was to create an inventory of historical (recent and pre-existing) landslides on the coastal bluffs of South Manitou Island in Lake Michigan, part of the Sleeping Bear Dunes National Lakeshore. High-resolution orthoimagery, dated April 4, 2012, and topography from two LiDAR data sets collected in December 2014 and from November 2015 through March 2016, respectively, were used to identify and map landslides and related features. The range in dates of the imagery temporally overlapped with the early part of a recent pluvial that resulted in 1.9 m rise in the monthly average level of Lake Michigan between January 2013 and July 2020. The areas of active slope movement identified using aerial imagery and topography, dated between April 2012 and March 2016, defined the extent and magnitude of landsliding directly prior to the onset of and during the early part of the recent pluvial and provided insight into the types and mechanisms of the slope failures.

Map

Communities

  • USGS Data Release Products

Tags

Provenance

Level 1 revision completed on May 19, 2022. The error is limited to the Dataset Title which does not match the file name except for two of the metadata files in the metadata zipped folder.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9SQWQ37

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