Title :
Using multiple-polarization L-band radar to monitor marsh burn recovery
Author :
Ramsey, Elijah W., III ; Nelson, Gene A. ; Sapkota, Sijan K. ; Laine, Stephen C. ; Verdi, Jim ; Krasznay, Stephen
Author_Institution :
Biol. Resources Div., US Geol. Survey, Lafayette, CA, USA
fDate :
1/1/1999 12:00:00 AM
Abstract :
Aircraft L-band VV-, HH-, and VH-polarizations were examined as tools for monitoring burn recovery in a coastal marsh. Significant relationships were observed between time-since-burn (difference between burn and image collection dates; 550-900 days after burn) and returns related to all polarizations. As marsh burn recovery progressed, VV returns decreased while HH and VH returns increased. Radar returns extracted from control sites adjacent to each burn-simulated nonburn marsh and were not individually or in combination significantly related to the time-since-burn. Normalized by the control data, VH-polarization explained up to 83% of the total variations. Overall, the L-band multipolarization radars estimated time-since-burn within ±59 to ±92 days
Keywords :
airborne radar; geophysical techniques; pollution measurement; radar cross-sections; radar polarimetry; remote sensing by radar; synthetic aperture radar; vegetation mapping; AD 1993 07 28; Florida; Juncus roemerianus; L-band; SAR; UHF radar; USA; United States; airborne radar; black needlerush; canopy; coastal marsh; environmental degradation; environmental science; fire damage; geophysical measurement technique; marsh burn recovery; multiple-polarization; natural vegetation; polarization; pollution; radar polarimetry; radar remote sensing; sedge; synthetic aperture radar; time-since-burn; Aircraft; Biomass; Fires; L-band; Optical sensors; Polarization; Radar; Remote monitoring; Sea measurements; Wildlife;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
