Please use this identifier to cite or link to this item:
Title: Distributed hydrological modeling of a micro-scale rainforest watershed in Amazonia: Model evaluation and advances in calibration using the new HAND terrain model
Authors: Cuartas, Luz Adriana
Tomasella, J.
Nobre, Antônio Donato
Nobre, Carlos Afonso
Hodnett, Martin G.
Waterloo, M. J.
Oliveira, Sylvia Mota de
von Randow, Rita C.S.
Trancoso, Ralph
Ferreira, Mônica
Keywords: Amazon Rainforest
Deep Soils
Digital Elevation Model
Distributed Hydrological Modeling
Distributed Hydrology Soil Vegetation Models
Equatorial Climate
High Resolution
Hydrological Data
Hydrological Parameters
Hydrological Response
Lowland Watersheds
Model Evaluation
Model Simulation
Observed Data
Parameter Set
Peak Flows
Second Orders
Shallow Soils
Shuttle Radar Topography Mission
Spatial Scale
Temperate Climate
Terrain Model
Third Order
Tropical Forest
Tropical Rain Forest
Vegetation Maps
Water Balance
Water Table Depths
Wet Season
Climate Models
Computer Simulation
Numerical Models
Soil Moisture
Soil Surveys
Spatial Distribution
Tracking Radar
Water Supply
Geologic Models
Digital Elevation Model
Hydrological Modeling
Numerical Model
Peak Flow
Soil Moisture
Spatial Distribution
Tropical Environment
Tropical Forest
Water Table
Mathematical Models
Water Supply
Issue Date: 2012
metadata.dc.publisher.journal: Journal of Hydrology
metadata.dc.relation.ispartof: Volume 462-463, Pags. 15-27
Abstract: Three sections of the Asu catchment, which is located within the Cuieiras Reservation 80km northwest of Manaus in Central Amazonia, Brazil, were gauged to create nested catchments of the first (0.95km 2), second (6.58km 2) and third (12.43km 2) Strahler orders. As the Cuieiras reserve contains pristine tropical rainforest, hydrological data collected in these catchments offers an opportunity to test the Distributed Hydrology Soil Vegetation Model's (DHSVM) ability to simulate hydrological responses, and to represent the spatial distribution of hydrological phenomena such as evapotranspiration, soil moisture and water table depth. Digital Elevation Model (DEM) data were obtained from the Shuttle Radar Topography Mission (SRTM) data. We used a novel approach to produce high resolution (30m) soil and vegetation maps that enabled a representative set of relevant parameters to be acquired. These soil and vegetation maps were derived from a hydrologically normalized DEM through the HAND (Height Above the Nearest Drainage) technique, a new type of terrain model procedure. The DHSVM model was calibrated and validated using the second order watershed. To test the model's ability to represent processes at different spatial scales, the parameter set derived from the calibration was used to simulate the discharge of the first and third order streams. Model simulations of soil moisture, groundwater levels and discharge were compared with observed data and exhibited satisfactory performance overall, with the exceptions of the predicted water table depth and the underestimation of peak flows during the wet season. The results from these DHSVM runs indicate that the model is applicable to tropical forests environments (equatorial climates, lowland watersheds with deep soil), which are quite distinct from the environments for which the model was developed (temperate climates, mountainous watersheds with shallow soil). The study also demonstrated that the HAND terrain model is a useful tool for representing the spatial distributions of key hydrological parameters. © 2012.
metadata.dc.identifier.doi: 10.1016/j.jhydrol.2011.12.047
Appears in Collections:Artigos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.