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: Evaluation of the potential of the NOAA-n AVHRR reflective data in oceanography
  name:
    name part: Gallegos, Sonia.
    role:
      role term: creator
  name:
    name part: Darnell, R. M.
    role:
      role term: degree supervisor.
  name:
    name part: El-Sayed, S. Z.
    role:
      role term: degree committee member.
  name:
    name part: Gray, T. I.
    role:
      role term: degree committee member.
  name:
    name part: Sprinsky, W. H.
    role:
      role term: degree committee member.
  name:
    name part: Vastano, A. C.
    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: 1990
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: print
    extent: xv, 189 leaves : illustrations ; 29 cm
  abstract: A need exists in oceanography for synoptic detection and delineation of various organic and physical features at the ocean surface because assessment of such features may provide insight into the complex interactions of the various processes governing the ocean. This study investigates the capabilities of the reflective data of the NOAA-n Advanced Very High Resolution Radiometer (AVHRR) to detect and map features associated with phytoplankton concentrations at the ocean surface. Considering the capabilities of satellite observation for this problem, the more accessible data sets from the NOAA-n AVHRR are examined, and techniques designed to exploit the full sensitivity of the instrument are introduced. These procedures include an editing technique that maintains the full resolution in the low albedoes pertaining to ocean targets and a normalizing procedure to account for atmospheric contributions to the signal. The atmospheric effects are treated as functions of the amount of water vapor in the atmosphere and the position of the individual pixels along the swath width of the instrument. These techniques permit the refinement of the reflective data to 0.1% albedo and the expansion of acceptable data to at least 512 pixels on either side of nadir. Data obtained with these methodologies are compared with near-simultaneous and pigment calibrated Coastal Zone Color Scanner (CZCS) data. These two sets of data are segmented using a mathematical classification technique and then compared to determine similarity of spatio-temporal features. To verify the AVHRR findings, these data are compared to concurrent in-situ data from two red tide incidents in the eastern and western coasts of the Gulf of Mexico during 1983 and 1986, respectively. Comparisons are also made between AVHRR reflective and emittive data to investigate possible relationships existing between the circulation patterns and phytoplankton distributions.
  note: Typescript (photocopy).
  note: Vita.
  note: "Major subject: Oceanography."
  note: Ph. D. Texas A & M University 1990
  note: Includes bibliographical references.
  subject:
    geographic code: nm-----
  subject:
    topic: Ocean-atmosphere interaction
  subject:
    topic: Oceanography
    topic: Research
    geographic: Mexico, Gulf of
  subject:
    topic: Ocean bottom
  subject:
    topic: Oceanography
    topic: Research
  subject:
    geographic: Gulf of Mexico
  subject:
    topic: Major oceanography
  identifier: http://gateway.proquest.com/openurl
  identifier: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://proxy.library.tamu.edu/login
  related item:
    location:
      url: http://gateway.proquest.com/openurl
  record info:
    record content source: TXA
    record creation date: 901220
    record change date: 20200904152506.0
    record identifier: in00000995784
    language of cataloging:
      language term: eng