GIM International, the independent and high-quality information source for the global geomatics industry, brings you the latest insights and developments in both technology and management, including: topical overviews, news and developments, expert opinions, innovation updates, and more.

The magazine is published monthly (i.e. 12 times a year) and is available on a subscription basis. A subscription to GIM International includes the weekly e-newsletter.

GIM International is written for key decision-makers active in the international geomatics field and is targeted at commercial, academic and government professionals worldwide. Its readers are involved in land surveying, GIS, photogrammetry, remote sensing, LBS, Lidar, cartography, GPS/GNSS, cadastres, 3D city modelling, geo-databases and other geomatics-related activities.

GIM International

Tweets from @gim_intl

Available media from GIM International

  • Print MagazineMapping the world

    The printed edition of GIM International, the global trade magazine for geomatics, reports on the latest news and brings insights into new developments and innovative applications in the field of geomatics. GIM International addresses both technological and managerial aspects that are relevant for industry professionals. The magazine is published monthly (i.e. 12 times a year) and is available on a subscription basis.

    Advertise? Click here!
  • Online MagazineOnline access - anytime, anywhere

    GIM International offers an online version of the printed magazine, in PDF format. Receive the same independent and high-quality information about worldwide issues in the geomatics industry and gain insights into the latest developments in both technology and management - all delivered straight to your inbox. Benefit from online access - anytime, anywhere - and an archive of back issues at your fingertips.

    Subscribe to the online magazine
  • WebsiteNews and developments

    Visit the website for free access to news, industry developments and background information about geomatics-related topics.

    Visit the website
  • E-newsletterFree updates on news and developments

    Sign up for the free weekly newsletter to receive the latest geomatics-related information delivered to your inbox, including: News and developments - Product innovations - Job vacancies - Conferences and exhibitions

    Yes, I want a weekly update
  • Business GuideOverview of industry manufacturers

    The Business Guide is an indispensable information source, valued by more than 30,000 geomatics professionals around the world. The printed edition is published annually. The same overview of industry manufacturers and suppliiers is also made available online as a freely accessible and searchable database.

    Sign up for inclusion in the Business Guide

NASA-Produced Damage Maps to Benefit Mexico Earthquake Response

A NASA-produced map of areas likely damaged by the 19 September magnitude 7.1 Raboso earthquake near Mexico City has been provided to Mexican authorities to help responders and groups supporting the response efforts. The quake, which struck 120 kilometers southeast of Mexico City, caused significant loss of life and property damage.

To assist in the disaster response efforts, scientists at NASA's Jet Propulsion Laboratory and Caltech, both in Pasadena, California, obtained and used before-and-after interferometric synthetic aperture radar (InSAR) satellite imagery of areas of Central Mexico, including Mexico City, affected by the quake, to identify areas of damage and produce what is known as a Damage Proxy Map. The imagery – acquired before the quake on 8 September, and again on 20 September 2017, just 6.5 hours after the earthquake – is from the radar instrument on the Copernicus Sentinel-1A and Sentinel 1-B satellites operated by the European Space Agency. The map may be viewed and downloaded in full resolution here and here.

Surface change detection

The views indicate the extent of damage caused by the earthquake and subsequent aftershocks, based on changes to the ground surface detected by radar. The colour variations from yellow to red indicate increasingly more significant ground and building surface change. The map should be used as guidance to identify damaged areas, and may be less reliable over vegetated areas. It covers an area of 175 by 170 kilometres. Each pixel measures about 30 metres across.

The radar data were processed by the Advanced Rapid Imaging and Analysis (ARIA) team at JPL and Caltech. ARIA is a NASA-funded project that is building an automated system for demonstrating the ability to rapidly and reliably provide GPS and satellite data to support local, national and international hazard-monitoring and response communities.

Global environmental data

The NASA Disasters Program, part of the Earth Science Division in the Science Mission Directorate, works with international, regional and local disaster response agencies to produce critical information products using global environmental data from NASA’s fleet of Earth science satellites and other airborne and space-based assets. Dedicated teams of Earth-observation disaster specialists at NASA centers mobilise to respond in real-time to a wide range of natural hazards and human-produced events.

Using space-based imagery of disasters, ARIA data products can provide rapid assessments of the geographic region affected by a disaster, as well as detailed imaging of locations where damage occurred. Radar can "see" through clouds day and night and measure centimetre-level ground movements.

Preliminary validation of the Raboso quake Damage Proxy Map was done by comparing it to a crowd-sourced Google Map. Sentinel-1 data were accessed through the Copernicus Open Access Hub. The image contains modified Copernicus Sentinel data (2017), processed by ESA and analysed by the NASA-JPL/Caltech ARIA team.

The 19 September Mexico quake occurred just 12 days after a separate magnitude 8.1 earthquake struck Mexico’s southern Pacific coast, also resulting in significant loss of life and property damage. The JPL/Caltech team had previously produced and made available a similar Damage Proxy Map for the Sept. 7 quake, along with other supporting products using satellite radar data.

For more information about ARIA, visit http://aria.jpl.nasa.gov.
Learn more on interferometric synthetic aperture radar by reading this article

Source: NASA.

(Read more)