نتایج جستجو برای: hydrologic instrument

تعداد نتایج: 90916  

Journal: :Environmental Modelling and Software 2008
Jonathan L. Goodall Jeffery S. Horsburgh Timothy L. Whiteaker David R. Maidment Ilya Zaslavsky

A wealth of freely available hydrologic data are provided by governmental organizations including in situ observations, geospatial data sets, remote sensing products, and simulation model output. Despite having access to this information, much of the data remain underutilized in the hydrologic sciences due in part to the time required to access, obtain, and integrate data from different sources...

2011
JW Brakebill DM Wolock SE Terziotti

Digital hydrologic networks depicting surface-water pathways and their associated drainage catchments provide a key component to hydrologic analysis and modeling. Collectively, they form common spatial units that can be used to frame the descriptions of aquatic and watershed processes. In addition, they provide the ability to simulate and route the movement of water and associated constituents ...

2016
Robert E. Danczak Steven B. Yabusaki Kenneth H. Williams Yilin Fang Chad Hobson Michael J. Wilkins

Citation: Danczak RE, Yabusaki SB, Williams KH, Fang Y, Hobson C and Wilkins MJ (2016) Snowmelt Induced Hydrologic Perturbations Drive Dynamic Microbiological and Geochemical Behaviors across a Shallow Riparian Aquifer. Front. Earth Sci. 4:57. doi: 10.3389/feart.2016.00057 Snowmelt Induced Hydrologic Perturbations Drive Dynamic Microbiological and Geochemical Behaviors across a Shallow Riparian...

Groundwater, a special hydrological variable and freshwater resource is completely inter-reliant with hydro-metorological, topographic, land use and hydro-geological components of hydrologic cycle. Trend of hydrologic componentsfor future prediction is attempted to confer in this study using Man-Kendall test, linear regression and geometric progression analysis on recorded data collected from r...

2003
Marc Stieglitz Jeff Shaman James McNamara Victor Engel Jamie Shanley George W. Kling

[1] Hydrologic processes control much of the export of organic matter and nutrients from the land surface. It is the variability of these hydrologic processes that produces variable patterns of nutrient transport in both space and time. In this paper, we explore how hydrologic ‘‘connectivity’’ potentially affects nutrient transport. Hydrologic connectivity is defined as the condition by which d...

2013
Lorraine E Flint Alan L Flint James H Thorne Ryan Boynton

Introduction: Resource managers need spatially explicit models of hydrologic response to changes in key climatic drivers across variable landscape conditions. We demonstrate the utility of a Basin Characterization Model for California (CA-BCM) to integrate high-resolution data on physical watershed characteristics with historical or projected climate data to predict watershed-specific hydrologi...

2004
Suzanne M. Kercher Quentin J. Carpenter Joy B. Zedler

1 Corresponding author: [email protected]; (608) 238-4673; fax: (608) 262-7509 ABSTRACT: Twelve wet meadows in Dane County, Wisconsin showed vegetation patterns that correlate with hydrologic disturbance and presence of a clonal invasive grass, Phalaris arundinacea L., at two scales, 4500-m2 (0.45 ha) “sites” and 1-m2 plots. Sites with indicators of hydrologic disturbance had lower species rich...

2005
R. Jayakrishnan R. Srinivasan C. Santhi J. G. Arnold

Developments in computer technology have revolutionized the study of hydrologic systems and water resources management. Several computer-based hydrologic/water quality models have been developed for applications in hydrologic modelling and water resources studies. Distributed parameter models, necessary for basin-scale studies, have large input data requirements. Geographic information systems ...

Journal: :Environmental Modelling and Software 2012
Daniel P. Ames Jeffery S. Horsburgh Yang Cao Jirí Kadlec Timothy L. Whiteaker David Valentine

Discovering and accessing hydrologic and climate data for use in research or water management can be a difficult task that consumes valuable time and personnel resources. Until recently, this task required discovering and navigating many different data repositories, each having its ownwebsite, query interface, data formats, and descriptive language. New advances in cyberinfrastructure and in se...

2014
HUMBERTO VERGARA YANG HONG JONATHAN J. GOURLEY EMMANOUIL N. ANAGNOSTOU VIVIANA MAGGIONI DIMITRIOS STAMPOULIS

Uncertainty due to resolution of current satellite-based rainfall products is believed to be an important source of error in applications of hydrologic modeling and forecasting systems. A method to account for the input’s resolution and to accurately evaluate the hydrologic utility of satellite rainfall estimates is devised and analyzed herein. A radar-based Multisensor Precipitation Estimator ...

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