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Remote Sensing

This project, sponsored by NASA, was a collaboration among Caltech, the NASA Jet Propulsion Laboratory, California State University - Sacramento, CICESE (Ensenada), and the Comision Federal de Electricidad (Mexico).

Collaborating scientists: Arturo Martin (CICESE), Alejandro Hinojosa Corona (CICESE), Brian Hausback (CSU Sacramento), Dave Pieri (JPL).  Francisco Romero of Mexico-CFE also collaborated on some of the field work.

The project uses MASTER (Modis-Aster simulator) data collected from a low-flying aircraft, for 2 regions of Baja California that probably had volcanic eruptions about 500 years ago. These areas are the southern Puertecitos Volcanic Province and the Tres Virgenes- La Reforma Caldera region. The MASTER sensor collects 50 spectral bands in visible and infrared wavelengths. We used these data to map the distribution of volcanic products from the youngest eruptions, and calibrated these results with field work and with measurements from a hand-held spectrometer.

The data were collected in late April and early May, 1999. You can obtain these data from NASA.  For a quick look at some of the images you can go to the MASTER data archive and look under the Puertecitos and Tres Virgenes flight lines.

Click here for a flight line map and here for a blowup of the Puertecitos or Tres Virgenes flight lines.

Results were presented in the Caltech PHD thesis of Dr. Jane Dmochowski and were also used by summer MURF student Julie Parra and summer SURF student Adrian Seymour.

Some of the results were published in this journal article:

Hook, S. J., J. E. Dmochowski, K. A. Howard, L. C. Rowan, K. E. Karlstrom, and J. M. Stock, Mapping variations in weight percent silica from multispectral thermal infrared imagery - Examples from the Hiller Mountains, Nevada, USA and Tres Virgenes-La Reforma, Baja California Sur, Mexico, Remote Sensing of Environment, v. 95, issue, 3,  p. 273-289, 2005.

This project was funded by NASA.  A related project (Reforma 2000 expedition) was funded by the National Geographic Society.