Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Robert M. Ragan"'
Autor:
Robert M. Ragan, Kurt J. Robinson
Publikováno v:
Journal of the American Water Resources Association. 29:1003-1008
The reauthorization of the Clean Water Act reemphasizes the need for regional scale monitoring and management of nonpoint pollution loads. The magnitude of the task will require that local governments and their consultants integrate information syste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7972123f7458ee23c9b899d3f31495ce
https://doi.org/10.1111/j.1752-1688.1993.tb03263.x
https://doi.org/10.1111/j.1752-1688.1993.tb03263.x
Publikováno v:
Journal of the American Water Resources Association. 22:1011-1019
A canopy reflectance model is incorporated into a routine for simulating water and energy flows in the soil-plant-atmosphere system. The reflectance model is structured tocalculate canopy albedo throughout each simulation period and to determine spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fab2b438e12867a4eff7c6cdaef780a5
https://doi.org/10.1111/j.1752-1688.1986.tb00772.x
https://doi.org/10.1111/j.1752-1688.1986.tb00772.x
Publikováno v:
Journal of the Hydraulics Division. 101:1185-1195
A number of mathematical models used to estimate storm hydrographs in urban areas consider runoff as a deterministic process and link a series of submodels to simulate the behavior of the various components of the runoff cycle. Because of the number
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d2e8f5054d815736b6094382425d819
https://doi.org/10.1061/jyceaj.0004415
https://doi.org/10.1061/jyceaj.0004415
Autor:
Robert M. Ragan, Thomas J. Jackson
Publikováno v:
Journal of the Hydraulics Division. 100:1739-1752
Numerical solutions of the Boussinesq equation were used to examine the hydrologic behavior of porous pavement systems incorporating subdrains in open graded base courses placed on impermeable membranes. A series of numerical experiments showed that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0818e2978d9a9ed7d5e1ee6d8410ba1c
https://doi.org/10.1061/jyceaj.0004130
https://doi.org/10.1061/jyceaj.0004130
Publikováno v:
Journal of the American Water Resources Association. 19:165-174
In a cooperative demonstration project, NASA and the U.S. Army Corps of Engineers (Corps) compared conventional and Landsat-derived land-use data for use in hydrologic models, and the resulting discharge frequency curves were analyzed. When a grid-ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9291d7fbcdb611d374d53b9e2b50a534
https://doi.org/10.1111/j.1752-1688.1983.tb05310.x
https://doi.org/10.1111/j.1752-1688.1983.tb05310.x
Autor:
Robert M. Ragan, Thomas J. Jackson
Publikováno v:
Journal of the Hydraulics Division. 106:667-678
The land cover requirements of the Soil Conservation Service (SCS) model used to develop volume of runoff for hydrograph synthesis in suburban areas were modified to be compatible with Landsat digital data. Curve numbers obtained with these alternate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3dacccbd0e423401417fa8d7415ef16
https://doi.org/10.1061/jyceaj.0005416
https://doi.org/10.1061/jyceaj.0005416
Publikováno v:
Journal of the Water Resources Planning and Management Division. 103:141-158
Many of the models designed to support the hydrologic studies associated with urban water resources planning require input parameters that are defined in terms of land cover. Estimating the land cover is a difficult and expensive task and any innovat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::75e045a905bebd9377e4fd29c04f2dc6
https://doi.org/10.1061/jwrddc.0000035
https://doi.org/10.1061/jwrddc.0000035
Autor:
Robert M. Ragan, Thomas J. Jackson
Publikováno v:
Journal of the Hydraulics Division. 101:1469-1475
The study investigates the use of computer-aided analysis of LANDSAT multispectral data in estimating percentage of imperviousness and associated land uses needed in urban hydrologic modeling. An interactive computer was used to delineate seven land
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb81d32557c15194ac10593c9f26d423
https://doi.org/10.1061/jyceaj.0004440
https://doi.org/10.1061/jyceaj.0004440
Autor:
Alan B. Hais, Robert M. Ragan
Publikováno v:
Water Resources Research. 5:1414-1417
An instrument to record a number of water levels on one chart for field studies was developed around a float-pulley mechanism attached to the shaft of a potentiometer. A timing circuit allows one 6-second recording cycle each minute for each of 10 se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e70721a17ed97f0d5f24e474e55b44c
https://doi.org/10.1029/wr005i006p01414
https://doi.org/10.1029/wr005i006p01414
Laboratory evaluation of a numerical flood routing technique for channels subject to lateral inflows
Autor:
Robert M. Ragan
Publikováno v:
Water Resources Research. 2:111-121
As a result of advances in high speed digital computers, considerable interest has been shown in the use of a numerical solution of the complete equations of free surface flow to synthesize the unsteady channel and overland flow conditions that occur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::55ff70e50beaea85784a168800504959
https://doi.org/10.1029/wr002i001p00111
https://doi.org/10.1029/wr002i001p00111