Skip to main content

Environmental characterization of a hypersaline coastal lagoon from Landsat-5 Thematic Mapper data

Buy Article:

$63.00 plus tax (Refund Policy)

Abstract:

Analysis of two 1994 Landsat-5 Thematic Mapper (TM) images (TM bands 1, 2, 3, 4 and 5) from a shallow coastal lagoon in Brazil yielded high correlations between the digitally processed upwelling radiances and synoptic field measurements of chlorophyll-a and Secchi disk depths in water depths greater than 3.5 m. However, in shallower water, bottom reflectance dominates the optical signal. Here the TM images can be used to identify regions of microphytobenthic communities with different densities (levels of productivity). A principal component analysis (PCA) of TM bands 1, 2 and 3 yielded more consistent correlations with chlorophyll-a and turbidity variability than the raw TM data. PC1 and PC2 correlated with chlorophyll-a and PC1 correlated with Secchi disk depths on both dates.

Document Type: Research Article

DOI: https://doi.org/10.1080/0143116031000075099

Affiliations: Programa HIDRO/OBT, Instituto Nacional de Pesquisas Espaciais, Av. dos Astronautas, 1758, SERE II, CEP 12201-970, S. J. Campos, SP, Brazil

Publication date: 2003-08-01

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more