rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Suspended sediment on the upper Texas continental shelf
  name:
    name part: Sahl, Lauren Elizabeth
    role:
      role term: creator
  name:
    name part: Benton, Arthur R.
    role:
      role term: degree committee member.
  name:
    name part: Bryant, William R.
    role:
      role term: degree committee member.
  name:
    name part: McGrail, David W.
    role:
      role term: degree supervisor.
  name:
    name part: Merrell, William J.
    role:
      role term: degree committee member.
  name:
    name part: Merrell, William J.
    role:
      role term: degree supervisor.
  name:
    name part: Reid, Robert O.
    role:
      role term: degree committee member.
  name:
    name part: Texas A & M University
    role:
      role term: degree granting institution.
  type of resource: text
  genre: bibliography
  genre: Academic theses
  origin info:
    place:
      place term: xx
    date issued: 1984
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xi, 92 leaves : illustrations ; 29 cm
  abstract: Hydrographic and transmissivity data and substrate samples were used to examine the hydrography, the bottom nepheloid layer (BNL) and the grainsize distribution of the substrate on the upper Texas continental shelf. Hydrographic data collected in March 1982 on one alongshore and four cross-shelf sections show the advection of mid or inner shelf water onto the outer shelf. Vertical sections of temperature, salinity and sigma-t show that the density structure on the inner shelf is governed by the salinity distribution while on the outer shelf the temperature distribution dominates the density structure. Transmissivity vertical sections show that a BNL is present across the shelf. On the inner shelf, surface nepheloid layers are present and, at the shelf edge, intermediate nepheloid layers are present. Substrate grainsize analyses show that two modes are usually present; a fine to very fine sand mode, and a clay mode. The clay mode indicates that present day deposition is occurring. Linear correlation analyses done on the BNL properties height and total suspended load and on substrate and hydrographic properties indicate that the BNL is not simply linked to either the substrate or the hydrography. Examination of long-term current meter data collected by other investigators shows that bottom currents on the shelf have an offshore component much of the time. This provides a mechanism for transporting suspended sediment across and eventually off the shelf. Moreover, bottom currents on the shelf are sometimes strong enough to erode unconsolidated silt and clay. Thus, the substrate serves as a source for BNL suspended matter. In addition, advected suspended matter contributes to the BNL.
  note: "Major subject: Oceanography."
  note: Typescript (photocopy).
  note: Vita.
  note: Ph. D. in Philosophy Texas A & M University 1984
  note: Includes bibliographical references (leaves 86-91).
  subject:
    geographic code: n-us-tx
  subject:
    topic: Marine sediments
  subject:
    topic: Oceanography
  identifier: http://proxy.library.tamu.edu/login
  identifier: https://hdl.handle.net/1969.1/DISSERTATIONS-408983
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: https://hdl.handle.net/1969.1/DISSERTATIONS-408983
  record info:
    record content source: TXA
    record creation date: 860411
    record change date: 20220104090241.0
    record identifier: in00000408481
    language of cataloging:
      language term: eng