Preliminary Co-seismic Landslide Inventory Map for Portoviejo ......Portoviejo 80 28'0"W 80 28'0"W 1...

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Portoviejo

80°28'0"W

80°28'0"W

1°4'0"S

1°4'0"S

Preliminary Co-seismic Landslide Inventory Map for Portoviejo, Ecuador

0 0.5 10.25km

Interpretation

International Charter Disaster Activation 564, coordinated byUNOSAT.This inventory was prepared in rapid mapping mode using acombination of satellite image interpretation and sourcinginformation from news reports and crowdsourcing.No liability concerning the content or use thereof is assumed by theproducer. Product published 25 April 2016 and designed forviewing at A0 paper size.

Data sources

This satellite image interpretation shows a landslide inventorymap produced by the British Geological Survey. The scale ofmapping was between 1:1,000 and 1:10,000 and the satelliteimage resolution is 0.5 m. Insets show detailed mapping.In the Portoviejo area 29 sites were identified where river banksare affected by mainly rotational landslides. These potentiallyaffect the stability of bridge abutments, houses and other assets.The landslides are likely caused by a combination of high waterlevels and seismic shock. The inset (top right) shows a largepotential landslide area, but this is uncertain. The hillytopography surrounding the city does not appear to be affectedby co-seismic landslides. This inventory requires field verification.

WGS84 Geographic (DMS)Geographical system: µCartographic information

Framework

Satellite data:

Vector data:Cities, Boundaries © OpenStreetMap

Pleiades © CNES 2016, Distribution Airbus DS

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Puyo

Tena

Macas

Quito

IbarraTulcan

Ambato

RiobambaBabahoyoGuaranda

Guayaquil

Esmeraldas

La TacungaPortoviejoEcuador

Colombia

Legend

Disaster coverage by the InternationalCharter 'Space and Major Disasters'. Formore information on the Charter, which isconcerned with assisting the disaster relieforganizations with multisatellite data,please visit www.disasterscharter.org

Contact Information:unosat@unitar.org24/7 Hotline: +41 75 411 4998www.unitar.org/unosatContact Information:landslides@bgs.ac.ukwww.bgs.ac.uk

(Imagery acquired 19 April 2016)

\ EpicenterDominant Landslide Type

Liquefaction, flowRotationalTranslationalTranslational, rotational" Town