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Proceedings Paper

Project of the aerosol spaceborne lidar Tectonica-A
Author(s): Gennadii G. Matvienko; Grigorii P. Kokhanenko; Vitalii S. Shamanaev; Vladimir A. Alekseev
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Paper Abstract

The time and place of hazardous tectonic phenomena can be predicted most efficiently with the use of spaceborne systems. In Russia a network of small satellites equipped with detectors of different types is being developed to detect places of future earthquakes. Feasibility of application of optical detectors is based on the following interesting fact. The number density of atmospheric aerosol particles with sizes from 0.1 to 1.0 micrometers tends to increase with time above geological faults several hours or tens of hours ahead of a volcanic eruption or an earthquake. As a rule, epicenters of possible hazardous tectonic phenomena are in the regions of the Earth where only remote means can be used to detect anomalous aerosol number density. The first lidars intended for remote cloud sensing have already been tested on board the Shuttle and Mir space stations that orbited at altitudes of 350-400 km. To evaluate the feasibility of spaceborne detection of anomalous surface aerosol emissions, we did calculations for the model of the aerosol atmosphere developed at the Institute of Atmospheric Optics using the experimental data obtained at the TRINITI and the Sankt-Petersburg State University. The light scattering theory demonstrates that wavelengths of 1.06, 0.532, and 0.355 micrometers are most suitable for sensing of anomalous aerosol emissions. The garnet lasers with diode pumping have already been manufactured commercially. They nave suitable energetic parameters, weight, and overall dimensions. A receiving telescope on the basis of metal- coated carbon plastic mirrors can be used to receive signals from anomalous aerosol emissions in the photon counting mode at night and to detect regions with enhanced number density of finely dispersed aerosol fraction. Technical and technological peculiarities of spaceborne lidar detection of anomalous aerosols are discussed in the present report.

Paper Details

Date Published: 7 December 1998
PDF: 5 pages
Proc. SPIE 3494, Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II, (7 December 1998); doi: 10.1117/12.332420
Show Author Affiliations
Gennadii G. Matvienko, Institute of Atmospheric Optics (Russia)
Grigorii P. Kokhanenko, Institute of Atmospheric Optics (Russia)
Vitalii S. Shamanaev, Institute of Atmospheric Optics (Russia)
Vladimir A. Alekseev, TRINITI (Russia)

Published in SPIE Proceedings Vol. 3494:
Atmospheric Propagation, Adaptive Systems, and Lidar Techniques for Remote Sensing II
Adam D. Devir; Anton Kohle; Ulrich Schreiber; Christian Werner, Editor(s)

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