Feb 04, 2010

New UNOSAT analysis: Comprehensive building damage assessment for Port-au-Prince Commune

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We would like to inform you of UNITAR/UNOSAT’s latest map: Comprehensive building damage assessment for Port-au-Prince Commune, Haiti.

The map presents a total building count and damage as assessed from both satellite and aerial survey imagery covering the Commune of Port-au-Prince. Damaged buildings were classified according to visually-assessed damage levels and summarized in a table by Commune Sector.

For calculation of percentage damage, identification of all buildings existing in the area prior to the 12 January earthquake was performed using available satellite and aerial imagery. A total of 88,497 buildings were identified and assessed. Of this total, 27,363 were identified as damaged or destroyed, representing approximately 30.9% of all buildings within Port-au-Prince.

This work is done at the request of UNDP, and in support of the UN-led efforts in the aftermath of the Haiti earthquake. Swisstopo and the Remote Sensing Laboratories (RSL) at the University of Zurich provided extensive pre-crisis building data in direct technical support of this UN damage analysis. Initial reference data were received from collaborative centers (European Commission JRC with the support of the Stability Instrument; Sertit/Space Charter) and other supporting entities (ITHACA, DLR, OSM). This analysis will be validated in the field during PDNA and recovery activities, for which UNOSAT participates, also in collaboration with EC JRC.

The map, including statistical breakdown of damage in Port-au-Prince, can be found at www.unosat.org/asp/prod_free.asp?id=52

as well as on the Global Disaster Alert and Coordination System (www.gdacs.org), including VirtualOSOCC.

The corresponding database for this damage assessment will be available shortly.

UNOSAT’s involvement related to the Haiti earthquake can be followed on http://www.unosat.org/asp/UNOSAT-EQ-201001-HTI.asp