NASA Damage Map Aids Puerto Rico Hurricane Response

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A NASA-produced map display areas of eastern Puerto Rico that were expected shop-worn by Hurricane Maria has been supposing to responding agencies, including a Federal Emergency Management Agency (FEMA). The hurricane, a Category 4 charge during landfall on Puerto Rico on Sept. 20, caused widespread repairs and countless casualties on a Caribbean island, an unincorporated U.S. domain with a race of about 3.4 million.

NASA/JPL-Caltech-produced map of repairs in and around San Juan, Puerto Rico (orange inset box) from Hurricane Maria, formed on belligerent and building aspect changes rescued by ESA satellites. Color variations from yellow to red prove increasingly some-more poignant belligerent and building aspect change. Credit: NASA-JPL/Caltech/ESA/Copernicus/Google

To support in disaster response efforts, scientists during NASA’s Jet Propulsion Laboratory and Caltech, both in Pasadena, California, performed and used before-and-after interferometric fake orifice radar (InSAR) satellite imagery of areas of Eastern Puerto Rico to brand a areas that are expected damaged. The imagery — acquired before a charge on Mar 25, 2017 and again one day after landfall on Sept. 21, 2017 — is from a radar instruments on a Copernicus Sentinel-1 satellites operated by a European Space Agency. The ensuing Damage Proxy Map shown here might be noticed and downloaded in full fortitude at:

https://www.jpl.nasa.gov/spaceimages/details.php?id=pia21964

The full map information files might be downloaded at:

https://aria-share.jpl.nasa.gov/events/201709-Hurricane_Maria/

The views prove a border of expected repairs caused by a hurricane, formed on changes to a belligerent aspect rescued by radar. The tone variations from yellow to red prove increasingly some-more poignant belligerent and building aspect change. The map is used as superintendence to brand potentially shop-worn areas and might be reduction arguable over murky and flooded areas. The map covers a area within a vast red polygon in a figure, that is 105 by 60 miles (169 by 96 kilometers) in extent. The inset, denoted by a orange rectangle, highlights repairs in and around a collateral city of San Juan. Each pixel in a map measures about 98 feet (30 meters) across.

NASA delivered a map to responding agencies, including FEMA, on Sept. 22, 2017. FEMA total a map with building infrastructure information to guess a repairs firmness map, that was sent to a Urban Search and Rescue teams in a margin in Puerto Rico.

The radar information were processed by a Advanced Rapid Imaging and Analysis (ARIA) group during JPL and Caltech. ARIA is a NASA-funded plan that is building an programmed complement for demonstrating a ability to fast and reliably yield GPS and radar satellite information to support local, inhabitant and general hazard-monitoring and response communities. InSAR can “see” by clouds and is supportive to changes in a harshness of a belligerent or building surfaces.

Using space-based radar imagery of disasters, ARIA information products can assist responders in creation fast assessments of a geographic segment influenced by a disaster, as good as minute imaging of locations where repairs occurred.

Preliminary validation of a Puerto Rico Hurricane Maria Damage Proxy Map was finished by comparing it to anecdotal reports of damage. Sentinel-1 information were accessed by a Copernicus Open Access Hub. The picture contains mutated Copernicus Sentinel information (2017), processed by ESA and analyzed by a NASA-JPL/Caltech ARIA team.

The ARIA group expects to furnish another Damage Proxy Map for western Puerto Rico this week, following merger of additional Copernicus Sentinel satellite data.

Source: JPL

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