Probabilistic liquefaction severity index maps of the state of Utah

1989 ◽  
Keyword(s):  
Severity Index ◽  
The State ◽  
Index Maps ◽  
Liquefaction Severity Index

Spatial and temporal characteristics of wildfires in Mississippi, USA

2010 ◽  
Vol 19 (1) ◽  
pp. 14 ◽  
Author(s):  
Katarzyna Grala ◽  
William H. Cooke
Keyword(s):  
Palmer Drought Severity Index ◽  
Severity Index ◽  
The State ◽  
Anthropogenic Factors ◽  
Burned Area ◽  
Drought Severity ◽  
Temporal Characteristics ◽  
Wildfire Occurrence ◽  
Spatial And Temporal Characteristics ◽  
Drought Severity Index

Forests constitute a large percentage of the total land area in Mississippi and are a vital element of the state economy. Although wildfire occurrences have been considerably reduced since the 1920s, there are still ~4000 wildfires each year in Mississippi burning over 24 000 ha (60 000 acres). This study focusses on recent history and various characteristics of Mississippi wildfires to provide better understanding of spatial and temporal characteristics of wildfires in the state. Geographic information systems and Mississippi Forestry Commission wildfire occurrence data were used to examine relationships between climatic and anthropogenic factors, the incidence, burned area, wildfire cause, and socioeconomic factors. The analysis indicated that wildfires are more frequent in southern Mississippi, in counties covered mostly by pine forest, and are most prominent in the winter–spring season. Proximity to roads and cities were two anthropogenic factors that had the most statistically significant correlation with wildfire occurrence and size. In addition, the validity of the Palmer Drought Severity Index as a measure of fire activity was tested for climatic districts in Mississippi. Analysis indicated that drought influences fire numbers and size during summer and fall (autumn). The strongest relationship between the Palmer Drought Severity Index and burned area was found for the southern climatic districts for the summer–fall season.

Mapping of Liquefaction Severity Index

1987 ◽  
Vol 113 (11) ◽  
pp. 1374-1392 ◽  
Author(s):  
T. Leslie Youd ◽  
David M. Perkins
Keyword(s):  
Severity Index ◽  
Liquefaction Severity Index

Assessment of various CPT based liquefaction severity index frameworks relative to the Ishihara (1985) H1–H2 boundary curves

2015 ◽  
Vol 79 ◽  
pp. 347-364 ◽  
Author(s):  
Sjoerd van Ballegooy ◽  
Russell A. Green ◽  
Julian Lees ◽  
Fredrick Wentz ◽  
Brett W. Maurer
Keyword(s):  
Severity Index ◽  
Boundary Curves ◽  
Liquefaction Severity Index

scholarly journals Liquefaction Susceptibility Zonation in Lempuing Subdistrict, Bengkulu City, Indonesia

2020 ◽  
Vol 25 (2) ◽  
pp. 123
Author(s):  
Lindung Zalbuin Mase
Keyword(s):  
Peak Ground Acceleration ◽  
Factor Of Safety ◽  
Severity Index ◽  
Ground Acceleration ◽  
Liquefaction Potential ◽  
Liquefaction Susceptibility ◽  
Vulnerability Map ◽  
Middle West ◽  
Very High ◽  
Liquefaction Severity Index

Zonation of liquefaction potential is the important thing in understanding the liquefaction impact on an area. The liquefaction Severity Index (LSI) method can be applied to determine the liquefaction vulnerability level. This paper presents a study of liquefaction using LSI method to compose the liquefaction vulnerability map in a coastal area of Bengkulu City i.e., Lempuing Subdistrict. This study was conducted by analyzing CPT data in Lempuing Subdistrict to obtain the Factor of Safety and the probability of liquefaction. Peak Ground Acceleration (PGA) was assumed as 0.5g, which refers to SNI 03-1726-2012. Furthermore, the value of liquefaction probability and factor of safety obtained was analyzed to obtain LSI index and adjusted to the specific categories i.e., very low (0<LSI<15), low (15<LSI<35), moderate (35<LSI<65), high (65<LSI<85), and very high (85<LSI<100). Based on the analysis result, Lempuing Subdistrict was categorized as a very high to the very low susceptible area to liquefaction. The very high susceptible area was located on the eastern Lempuing Subdistrict bordering to the Gading Cempaka Subdistrict. The high susceptible area was located on the northern Lempuing Subdistrict bordering the Tanah Patah Subdistrict. Moderate to very low susceptible areas were located in the middle, west, and south of Lempuing Subdistrict.

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