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:[email protected]/7 Hotline: +41 75 411 4998www.unitar.org/unosatContact Information:[email protected]
(Imagery acquired 19 April 2016)
\ EpicenterDominant Landslide Type
Liquefaction, flowRotationalTranslationalTranslational, rotational" Town