University of Southern CaliforniaApril 2011 University of Southern CaliforniaApril, 2011 University of Southern Californiap ,
s
s aso a
all cl
va 7 c
ev 87
Ze 58of existing roadway between USC Wrigley Institute and Two HarborsZ 5of existing roadway between USC Wrigley Institute and Two Harbors. G
of existing roadway between USC Wrigley Institute and Two Harbors
M OG
At Catalina Island CAM OAt Catalina Island CAo EOAt Catalina Island, CA.
d GE
n G
u –Introduction Hypothesism m –Introduction Hypothesis
dm m
t oduct o ypot es s
Ed amI d t ti l l d lid l i GIS i i t t E raA Landslide is a Mass movements under In regard to spatial landslide analysis, GIS is an important
y: gA Landslide is a Mass movements under g p y , p
t l t t d t i t h dli i li ti by oinfluences of gravity occur as a result of tool to carry out data input, handling, visualization, b
Prinfluences of gravity occur as a result of y p , g, ,
bi ti l id Pdiverse disturbing and destabilizing combination, query, analysis.
ed S diverse disturbing and destabilizing , q y, y
nte ISprocesses
en Gprocesses.
se
G
Th t bilit f l i d t i d bes c.
The stability of slopes is determined by
re Sce stab ty o s opes s dete ed by
th t f f d liPr .Sthe geometry of surfaces and slip-P
M.t e geo et y o su aces a d s p
h i Mhorizons.o o s
Research AreaResearch AreaMethodsMethods
C t li I l d i k i l d ff th t f th U S t t f C lif iet ods
• Catalina Island is a rocky island off the coast of the U.S. state of California,Catalina Island is a rocky island off the coast of the U.S. state of California, l t d b t 22 il (35 k ) th th t f L A l C lif ilocated about 22 miles (35 km) south-southwest of Los Angeles, California. A method of collection data haslocated about 22 miles (35 km) south southwest of Los Angeles, California. - A method of collection data has
• This is an analysis of landslide in an specific area of the Catalina Island been applied through three step:• This is an analysis of landslide in an specific area of the Catalina Island. been applied through three step:Study Area is located in the north west part (section third) of the island 1 L d lid i t• Study Area is located in the north west part (section, third) of the island 1.- Landslides inventory y p ( , ) a ds des e to y
• In the East-West existing roadway between the USC Wrigley Institute facility and mappingIn the East West existing roadway between the USC Wrigley Institute facility and mapping.and the town of Two Harbors 2 Preparation of terrainand the town of Two Harbors. 2.- Preparation of terrainp
parameter mapsparameter maps.
3 Analysis of the relation3.- Analysis of the relationResearch Aims b t l d lid di t ib tiResearch Aims between landslide distributionbet ee a ds de d st but o
This research follows a spatially distributed and terrain parameter mapsThis research follows a spatially-distributed and terrain parameter maps.data with a geo reference to real world Landslide inventory havedata with a geo-reference to real world. -Landslide inventory have y
conducted from internal data baseconducted from internal data base and fieldworkand fieldwork.
All the information concerning the-All the information concerning the type length and width of landslidestype, length and width of landslides bodies is entered in the database
GIS Analysis of landslides and terrain parametersbodies is entered in the database
GIS Analysis of landslides and terrain parametersG S a ys s o a ds des a d te a pa a ete s
ConclusionConclusionCo c us o
This research shows that in the area of-This research shows that in the area of the analysis there are two types ofthe analysis there are two types of landslides:landslides: 1 l h fl h i l d lid1. - slow earth flow their landslide1. slow earth flow their landslide
it llmasses are quite small. q2 rock falls occur in limestone2. - rock falls occur in limestone formationsformations-Since the slides has occurred at theSince the slides has occurred at the
i d h h t tupper regions and hence short-termupper regions and hence short term di ti ill b i di tremediation will be an immediate
solution in the form of relief wellssolution in the form of relief wells.
