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Investigation:

LC-07 (Melack / Novo / Forsberg)

LBA Dataset ID:

LC07_Poster_001

Originator(s):

1. Melack, John M.
2. Novo, Evlyn Marcia Leao de Moraes
3. Alsdorf, Doug
4. Barbosa, Claudio
5. Costa, Maycira
      6. Hess, Laura
7. Mertes, Leal (deceased)
8. Palha, Willian
9. Slaymaker, Dana Munro

Point(s) of Contact:

Gastil-Buhl, Mary (Gastil) (mary@icess.ucsb.edu)

Dataset Abstract:

The biogeochemistry of floodplain lakes is closely related to the seasonal fluctuation of the Amazon river. In large lakes wind is also an important forcing function explaining both spatial and vertical stratification. The input of nutrients from both river overflow and lake bottom is closely related to the spatial distribution of water quality variables which in turn affect and are affected by the mosaic of vegetative cover. In order to investigate those connections and to model the water circulation between the Amazon river and floodplain, a field campaign was carried out at Lago Grande de Curuai, a 2000 km2 oval floodplain lake located south of Obidos. During the mission 150 stations were sampled for the following variables: water spectral reflectance, total suspended solids (TSS), chlorophyll a + phaeophytin (CLH) and dissolved organic carbon (DOC) concentrations, pH, conductivity, turbidity, dissolved-oxygen, nitrogen, phosphorus, Secchi depth and geometrical depth. Sample location was based upon spectral classes derived from Landsat TM images.This paper assesses the use of geostatistical methods for modelling the spatial distribution of those variables as well as to investigate the spatial correlation between them. Preliminary results show strong anisotropy in some variables such as turbidity displaying directional effects related to Amazon river inputs to the lake. Other variables such as nitrogen do not display directional effects which should be further investigated.

Beginning Date:

2002-07-13

Ending Date:

2003-10-07

Metadata Last Updated on:

2007-07-02

Data Status:

Not Applicable

Access Constraints:

Public

Data Center URL:

http://www.icess.ucsb.edu/LBA/

Distribution Contact(s):

mary@icess.ucsb.edu

Access Instructions:

Public

Data Access:

IMPORTANT: The LBA-ECO Project website is no longer being supported. Links to external websites may be inactive. Final data products from the LBA project can be found at the ORNL DAAC. Please follow the fair use guidelines found in the dataset documentation when using or citing LBA data.
Poster(s):

http://www.icess.ucsb.edu/LBA/pubs/posters/painel_LBA_fortaleza_claudio.pdf

Citation Information - Other Details:

The following references were used in this paper: Barbosa, C.C.F.; Novo, E.M.L.M.; Costa, M. Remote Sensing for Sampling Station selection in the study of water circulation from river system to and Amazon floodplain lakes: a methodological proposal. II Conferência Científica Internacional do Experimento LBA, Manaus(AM) , julho de 2002. Barbosa, C.C.F., Novo, E.M.L.M., Carvalho, J.C., Filho, W.P., Mantovani, J.E. Caracterização Espectral das Massas Dâ�™Ã¡gua Amazônicas. XI Simpósio Brasileiro de Sensoriamento Remoto, Belo Horizonte, Brasil, 05 - 10 abril 2003, p. 2419 - 2425. Burrough, P. A.; McDonnell, R.A. Principles of geographical information systems. Oxford, Oxford University Press, 1997. Isaaks, E.; Srivastava, M. An Introduction to Applied Geostatistics. New York, Oxford University Press. 1989.

Keywords - Theme:

Parameter Topic Term Source Sensor
CHLOROPHYLL HYDROSPHERE WATER QUALITY FIELD INVESTIGATION  

Uncontrolled Theme Keyword(s):  Secchi depth, biogeochemistry, chlorophyll, conductivity, dissolved organic carbon, inundation, pH, suspended sediment, total suspended solids, turbidity, wetland, wetlands

Keywords - Place (with associated coordinates):

Region
(click to view profile)
Site
(click to view profile)
North South East West
Lago Grande de Curuai Amazon Basin -1.78333 -2.40000 -54.98333 -56.11667

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