scholarly journals Summary of Environmental Data Analysis and Work Performed by Lawrence Livermore National Laboratory (LLNL) in Support of the Navajo Nation Abandoned Mine Lands Project at Tse Tah, Arizona

2017 ◽  
Author(s):  
Michael J. Taffet ◽  
Bradley K. Esser ◽  
Victor M. Madrid
Keyword(s):  
Data Analysis ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Environmental Data ◽  
Abandoned Mine ◽  
Navajo Nation ◽  
Abandoned Mine Lands ◽  
Mine Lands

scholarly journals The implementation and data analysis of an interferometer for intense short pulse laser experiments

2016 ◽  
Vol 4 ◽  
Author(s):  
Jaebum Park ◽  
Hector A. Baldis ◽  
Hui Chen
Keyword(s):  
Data Analysis ◽  
Short Pulse ◽  
Lawrence Livermore National Laboratory ◽  
National Laboratory ◽  
Optical Probe ◽  
Fringe Analysis ◽  
Energetic Electrons ◽  
Short Pulse Laser ◽  
Laser Facility ◽  
Laser Experiments

We present an interferometry setup and the detailed fringe analysis method for intense short pulse (SP) laser experiments. The interferometry scheme was refined through multiple campaigns to investigate the effects of pre-plasmas on energetic electrons at the Jupiter Laser Facility at Lawrence Livermore National Laboratory. The interferometer used a frequency doubled ( $\unicode[STIX]{x1D706}=0.527~\unicode[STIX]{x03BC}\text{m}$ ) 0.5 ps long optical probe beam to measure the pre-plasma density, an invaluable parameter to better understand how varying pre-plasma conditions affect the characteristics of the energetic electrons. The hardware of the diagnostic, data analysis and example data are presented. The diagnostic setup and the analysis procedure can be employed for any other SP laser experiments and interferograms, respectively.

A GIS Methodology for Assessing the Safety Hazards of Abandoned Mine Lands (AMLs)

2013 ◽  
pp. 2128-2149
Author(s):  
Timothy J. Dolney
Keyword(s):  
Land Use ◽  
Spatial Distribution ◽  
Census Data ◽  
Abandoned Mine ◽  
Assessment Process ◽  
Safety Hazards ◽  
Abandoned Mine Lands ◽  
Assessment Techniques ◽  
Current Assessment ◽  
Mine Lands

Abandoned mine lands (AMLs) associated with past coal-mining scar Pennsylvania’s landscape with environmental and safety hazards. Reclamation projects eliminate and reduce hazards AMLs pose. Due to the large number of AMLs and limited funds, precedence is given to reclaim the most hazardous sites first. These sites are identified through an assessment process that assigns priorities to AMLs. However, priorities are out-dated and do not accurately reflect the current spatial distribution of land use and census data. This article presents a GIS methodology for the prioritization of AMLs using the process of extrapolation and focal statistics. By incorporating current assessment techniques into GIS with current land use and census data, AML priorities were reassigned to accurately reflect the current spatial landscape. Results indicate that current AML priorities assigned by the state do not accurately reflect current land use and census data and underestimate the safety hazards of many sites, including high priority sites.

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