Environmental Mapping with Imaging Spectroscopy of the World Trade Center Area After the September 11, 2001 Attack

Details Environmental Mapping with Imaging Spectroscopy of the World Trade Center Area After the September 11, 2001 Attack Environmental Mapping with Imaging Spectroscopy of the World Trade Center Area After the September 11, 2001 Attack

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002agufm.p51c..09c&link_type=abstract

American Geophysical Union, Fall Meeting 2002, abstract #P51C-09

Mathematics

Logic

5464 Remote Sensing, 5470 Surface Materials And Properties

Scientific paper

The Airborne Visible / Infrared Imaging Spectrometer (AVIRIS), a hyperspectral remote sensing instrument, was flown by JPL/NASA over the World Trade Center (WTC) area on September 16, 18, 22, and 23, 2001. A 2-person USGS crew collected samples of dusts and airfall debris from more than 35 localities within a 1-km radius of the World trade Center site on the evenings of September 17 and 18, 2001. The AVIRIS data, field spectrometer data collected in areas away from the WTC, and information derived from field samples in and around the WTC were used to calibrate, provide ground truth, and map the debris and its composition in the lower Manhattan area with 2x4-meter sampling. Laboratory analyses and the AVIRIS mapping results indicate the dusts are variable in composition, both on a fine scale within individual samples and on a coarser spatial scale based on direction and distance from the WTC. Replicate mineralogical and chemical analyses of material from the same sample reveal variability that presumably is due to the heterogeneous mixture of different materials comprising the dusts. The spatial variability is observed at large scales of tens of meters to centimeter and smaller scales. AVIRIS mapping suggests that materials with higher iron content settled to the south-southeast of the building 2 collapse center. Chrysotile may occur primarily (but not exclusively) in a discontinuous pattern radially in west, north, and easterly directions, perhaps at distances greater than 3/4 kilometer from ground zero. Although only trace levels of chrysotile asbestos have been detected in the dust and airfall samples studied to date, the presence of up to 20 volume % chrysotile asbestos in material coating steel beams in the WTC debris, and the potential areas indicated in the AVIRIS mineral maps, indicate that asbestos can be found in localized concentrations.

Affiliated with

Also associated with

No associations

Rating

Environmental Mapping with Imaging Spectroscopy of the World Trade Center Area After the September 11, 2001 Attack does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Environmental Mapping with Imaging Spectroscopy of the World Trade Center Area After the September 11, 2001 Attack, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Environmental Mapping with Imaging Spectroscopy of the World Trade Center Area After the September 11, 2001 Attack will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1892166