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Geologic characteristics of benthic habitats in Glacier Bay, southeast Alaska

Open-File Report 2006-1081

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Abstract

In April 2004, more than 40 hours of georeferenced submarine digital video was collected in water depths of 15-370 m in Glacier Bay to (1) ground-truth existing geophysical data (bathymetry and acoustic reflectance), (2) examine and record geologic characteristics of the sea floor, and (3) investigate the relation between substrate types and benthic communities, and (4) construct predictive maps of seafloor geomorphology and habitat distribution. Common substrates observed include rock, boulders, cobbles, rippled sand, bioturbated mud, and extensive beds of living horse mussels and scallops. Four principal sea-floor geomorphic types are distinguished by using video observations. Their distribution in lower and central Glacier Bay is predicted using a supervised, hierarchical decision-tree statistical classification of geophysical data.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geologic characteristics of benthic habitats in Glacier Bay, southeast Alaska
Series title:
Open-File Report
Series number:
2006-1081
Edition:
Online only, Version 1.0
Year Published:
2006
Language:
ENGLISH
Description:
Unpaginated
Online Only (Y/N):
Y