Interpretation of seabed geomorphology based on spatial analysis of high-density airborne laser bathymetry.Reportar como inadecuado


 Interpretation of seabed geomorphology based on spatial analysis of high-density airborne laser bathymetry.


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Type of Resource: text

Genre: article

Issuance: single unit

Date Issued: 2005

Publisher: Coastal Education & Research Foundation, Inc.

Physical Description: text/pdf[15p.]

Language(s): English

Summary: Airborne laser bathymetric (ALB) systems rapidly acquire large, high-quality datasets via variable swath widths that are independent of water depth. Laser bathymetric survey tools have applicability in clear coastal (Case II) waters down to 270 meters depth. Deployed along the southeast Florida (Palm Beach, Broward, and Miami-Dade Counties)coast, an advanced ALB system provided a continuous dataset for 160 kilometers of coast from onshore to 6 kilometers offshore. Digital terrain models developed from this high-density bathymetric data permitted recognition of numerous seafloor features and bathymetric patterns from different image formats. Bathymetric analysis of the 600-km2 survey area on the narrow continental shelf shows inherited lithologic features that are partly covered by surficial sediments. Primary parabathic provinces include: (1) nearshore rocky zones dominated by the Anastasia Formation, (2) coralalgalreef systems (Florida Reef Tract [FRT]), and (3) marine terraces. Secondary sedimentary subprovinces include shoreface sands, inter-reefal sedimentary infills (coral rubble in basal sequences and near reef gaps), and finer-grained materials seaward of the FRT. Tertiary topographic features include: (1) longshore bar and trough systems, shoals, sand sheets, and diabathic channels; (2) reef crests and ledges, forereef spurs and grooves, sediment ramps in large reef gaps, and incised paleo-river channels; and (3) drowned karst topography. Hierarchical organization of these bathymetric features is now possible for the first time because of the increased accuracy and density of bathymetric data obtained by ALB systems.

Identifier: 3174249 (digitool), FADT3174249 (IID), fau:2028 (fedora)

FAU Department/College: Department of Geosciences Charles E. Schmidt College of Science

Persistent Link to This Record: http://purl.flvc.org/fcla/dt/3174249

Restrictions on Access: ©2005 Coastal Education & Research Foundation, Inc.

Owner Institution: FAU



Autor: Finkl, Charles W. Jnr., creator Benedet, Lindino, creator Andrews, Jeffrey L., creator

Fuente: http://fau.digital.flvc.org/islandora/object/fau%3A2028



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