thumbnail

Sediment distribution on a storm-dominated insular shelf, Luquillo, Puerto Rico, U.S.A.

Journal of Coastal Research

By:
, , , and

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

A sea-floor mapping investigation designed to assess the sediment distribution, the movement of the nearshore sand supply, and the fate of sediment eroded from the shoreline was conducted using high-resolution sidescan-sonar, seismic reflection, and sediment sampling techniques on the northern insular shelf of Puerto Rico, off the town of Luquillo. Sea-floor structures and the distribution of sediment texture and composition suggest that regional oceanographic processes result in a net offshore direction for cross-shelf sediment transport on the middle and outer shelf during storms. If these same processes are active on the inner shelf, mapping results indicate that this sediment is not transported seaward of a series of east-west trending Pleistocene-age eolianite ridges that outcrop on the middle shelf. The eolianite ridges may act as natural dams, preventing the removal of sediment from the nearshore area. Sand deposits behind the "dams" are up to 20 m thick on the shoreward flank of the ridges.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Sediment distribution on a storm-dominated insular shelf, Luquillo, Puerto Rico, U.S.A.
Series title:
Journal of Coastal Research
Volume
12
Issue:
1
Year Published:
1996
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Coastal Research
First page:
147
Last page:
159