Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Emitt C. Witt"'
Autor:
Emitt C. Witt III
Publikováno v:
AIMS Environmental Science, Vol 3, Iss 3, Pp 509-524 (2016)
Historic lead and zinc (Pb-Zn) mining in southeast Missouri’s “Old Lead Belt” has left large chat piles dominating the landscape where prior to 1972 mining was the major industry of the region. As a result of variable beneficiation methods over
Externí odkaz:
https://doaj.org/article/7b95cead67614f929685dbcf8f548f18
Autor:
J. David Rogers, Francisca E. Oboh-Ikuenobe, Emitt C. Witt, Jordan A. Feight, Mohamed G. Abdelsalam, Olufeyisayo Ilesanmi, Xue Liang
Publikováno v:
Environmental and Engineering Geoscience. 26:449-462
Unmanned aerial systems (UAS) provide a framework for recording perishable surficial data or information. Open fractures exhibiting regular en-echelon patterns were captured by a 12-megapixel, FL-9 mm camera attached to a Phantom IV UAS over the epic
Autor:
Emitt C. Witt
Publikováno v:
Journal of Hydrology. 531:759-767
Summary Growing use of two-dimensional (2-D) hydraulic models has created a need for high resolution data to support flood volume estimates, floodplain specific engineering data, and accurate flood inundation scenarios. Elevation data are a critical
Autor:
Emitt C. Witt
Publikováno v:
The Journal of Geology. 123:283-294
Geospatial data are a key component of investigating, interpreting, and communicating the geological sciences. Locating geospatial data can be time-consuming, which detracts from time spent on a study because these data are not obviously placed in ce
Publikováno v:
Atmospheric Environment. 88:90-98
Airborne particulate material collected from seventeen rural unsurfaced roads in Missouri's agricultural and resource mining areas were characterized using the BCR sequential extraction procedure and simulated in vitro body fluids to determine the ph
Publikováno v:
Chemosphere. 92:1506-1512
Fugitive dust from 18 unsurfaced roadways in Missouri were sampled using a novel cyclonic fugitive dust collector that was designed to obtain suspended bulk samples for analysis. The samples were analyzed for trace metals, Fe and Al, particle sizes,
Publikováno v:
Journal of Environmental Quality. 42:21-29
Fugitive road dust collection for chemical analysis and interpretation has been limited by the quantity and representativeness of samples. Traditional methods of fugitive dust collection generally focus on point-collections that limit data interpreta
Publikováno v:
Environmental pollution (Barking, Essex : 1987). 216
The isotopic composition of lead (Pb) in fugitive dust suspended by a vehicle from 13 unsurfaced roads in Missouri was measured to identify the source of Pb within an established long-term mining area. A three end-member model using 207 Pb/ 206 Pb an
Autor:
Y Filali-Meknassi, Neil Lennart Anderson, Emitt C. Witt, Ronaldo Luna, Craig D. Adams, H Shi, Jianmin Wang, David K. Shaver, David A. Summers
Publikováno v:
Environmental Science & Technology. 41:3437-3443
Hurricane Katrina made landfall on the Louisiana peninsula south of New Orleans on Aug 29, 2005. The resulting storm surge caused numerous levy breaches in the parishes of New Orleans as well as on the Louisiana peninsula. This study was conducted to
Autor:
J. David Rogers, Adam F. Sevi, Emitt C. Witt, Ronaldo Luna, David A. Summers, David J. Hoffman
Publikováno v:
Circular. :27-34
A group of investigators from the University of Missouri-Rolla’s (UMR) Natural Hazards Mitigation Institute (NHMI) and the U.S. Geological Survey’s (USGS) Mid-Continent Geographic Science Center (MCGSC) formed a team to collect perishable data in