Identification

Title

Polygon inventory of 183 landslides mapped across Langtang Valley, Nepal (NERC Grant NE/L002582/1)

Abstract

This is a polygon shapefile inventory of 183 coseismic and climate-triggered landslides in the south-western portion of Langtang Valley Nepal. All mapped landslides were those visible in the landscape during the period 2017 – 2018. Landslides were mapped using a combination of field and remote sensing methodologies (see lineage). The inventory includes the landslide locations, perimeters (Length field), areas, types, and whether a given landslide was mapped in the field or remotely. These landslides were mapped for a range of purposes, from conducting landslide susceptibility assessments, to investigating landslide processes and preconditioning.

Resource type

dataset

Resource locator

https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item166947

name: Data

function: download

Unique resource identifier

code

http://data.bgs.ac.uk/id/dataHolding/13607779

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

Landslides

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011

Keyword set

keyword value

NERC_DDC

Geographic location

West bounding longitude

85.3400

East bounding longitude

85.6000

North bounding latitude

28.2300

South bounding latitude

28.1400

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

1979

code identifying the extent

NEPAL [id=497000]

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

NP

Extent group

authority code

title

reference date

date type

revision

effective date

2009

code identifying the extent

NPL

Temporal reference

Temporal extent

Begin position

2018-10-01

End position

2020-10-01

Dataset reference date

date type

creation

effective date

2021-06-21

Frequency of update

notApplicable

Quality and validity

Lineage

Landslides were mapped using a combination of field mapping and remote sensing. Field mapped landslides were identified during walk-over surveys conducted in October 2018. The locations and geometries of these landslides were recorded using a hand-held Garmin GPS unit and a TruPulse laser range finder. The exact geometries of these field-observed landslides were then corroborated using WorldView/GeoEye Satellite imagery from 2017. Furthermore, as not all landslides were accessible in the field, additional landslides in the landscape were mapped from the WorldView/GeoEye imagery alone, where all visible landslides in the imagery were delineated as polygons that included the source, runout and deposition zones of each landslide. The general type of each landslide was also classified according to the terminology of Varnes (1958).

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Conformity report

specification

title

reference date

date type

publication

effective date

2010-12-08

degree

false

explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Data format

name of format

.shp

version of format

Constraints related to access and use

Constraint set

Limitations on public access

Constraint set

Limitations on public access

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Responsible organisations

Responsible party

contact position

School of Geography, Earth and Environmental Sciences

organisation name

University of Plymouth

full postal address

Plymouth

email address

not available

responsible party role

originator

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

distributor

Responsible party

organisation name

British Geological Survey

email address

not available

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey

full postal address

Environmental Science Centre,Keyworth

NOTTINGHAM

NG12 5GG

United Kingdom

telephone number

+44 115 936 3100

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2024-03-14

Metadata language