Table of Contents

Dedicated to the 1000’s of life dropped in landslides, the new atlas assesses landslide
possibility in 13 districts in the Indian condition of Kerala.

The Western Ghats trailing the western edge of India are a world-wide hotspot for biodiversity.
The southern reach of the assortment extends into Kerala, where the steep slopes, delicate
soils and major monsoon rains enormously enhance the possibility of landslides.

Thomas Oommen, a professor of geological engineering at Michigan Technological College, is from Kerala, and he developed the Landslide
Atlas of Kerala with colleague K.S. Sajinkumar, an assistant professor of geology
at the College of Kerala. Their do the job started in 2016 when Sajinkumar was a postdoctoral
fellow at Michigan Tech less than Oommen’s steerage. The atlas, which delivers thorough,
up-to-date data about landslide risks in the condition, was composed for simple use
by these who want it most — individuals on the floor in the area. Every segment focuses
on a unique district and is accompanied by geographic information procedure (GIS) maps.

Landslide Atlas

Debris flows — muddy mixes of water, soil and natural and organic substance — are the most widespread
variety of landslide in Kerala, ordinarily occurring among June and November, when monsoon
rains soak the landscape. Landslides can be conveniently brought on by human exercise like
farming or design, and coastal cliffs are also vulnerable.

“Kerala is an area with intensive chemical weathering and deep soils main to a
mother or father substance that is conveniently moved by landslides,” suggests Scott Burns. The Portland
Condition College professor, who wrote the atlas foreward, is also president of the
Intercontinental Affiliation for Engineering Geology and the Setting.

“Reduction of property and decline of everyday living are two principal troubles that folks of the area
are confronted with,” Burns writes, adding that “community inhabitants and final decision makers
can see where the major probabilities of landslides can occur in just about every area with these
remarkable maps.”

Steep cliffs rise above a beach next to the ocean.
Steep seaside cliffs reveal thick soil levels — a merchandise of chemical weathering widespread
in tropical regions — that enhance the possibility of landslides throughout Kerala, India.
Credit rating: Kiran Udayakumar


The atlas consists of a districtwide landslide susceptibility map, which notes vital influencing
possibility components, significant landslides and descriptions of where they happened, alongside with
significant engineering jobs using spot.

Oommen and Sajinkumar compiled all of the maps making use of a new resource called GIS-TISSA.
TISSA stands for Software for Infinite Slope Security Analysis and was created within
a GIS setting. The program’s algorithms estimate how distinctive components interact
with a person another and evaluate the landslide vulnerability of an area.

A debris flow covers a hillside, full of rocks and trees.
Heavy monsoon rains among June and November are the primary bring about for landslides
in Kerala, India. This is a particles circulation in Kothamangalam. Credit rating: Sajinkumar KS

GIS-TISSA takes advantage of Python to interface with a person of the most commonly applied geospatial tools
in the world: ArcGIS. It will assist the geospatial group evaluate landslide hazards
caused by rainfall and earthquakes by way of a GIS resource they are presently snug
making use of. Oommen’s graduate student Jonathan Sanders and postdoctoral fellow Rudiger
Escobar-Wolf also contributed to GIS-TISSA growth.

The Landslide Atlas of Kerala sets a new regular for figuring out possibility in a landslide-prone
area and will assist the residents and policymakers of the condition make conclusions to
superior mitigate everyday living-threatening disasters.

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