Title :
Spatial and temporal variability of SAR backscatter signatures of coastal sea-ice types off the Lena River Delta (Laptev Sea)
Author :
Eicken, Hajo ; Blahak, Ulrich ; Dierking, Wolfgang ; Dmitrenko, Igor
Author_Institution :
Geophys. Inst., Alaska Univ., Fairbanks, AK, USA
Abstract :
Field observations and SAR imagery of coastal ice off the Lena Delta (Laptev Sea) in 1996/97 show a strong zonation of ice types associated with gradients in ice dielectric properties and microstructure. Ice-growth and radar-backscatter modelling indicate that the distinct transition between ice of high mean, low variance and low mean, high variance backscatter corresponds to an increase in parent water-mass salinity above 2 to 50/00. High radar penetration depths allow for detection and mapping of bottomfast ice
Keywords :
backscatter; oceanographic regions; oceanographic techniques; radar cross-sections; remote sensing by radar; sea ice; synthetic aperture radar; AD 1996; AD 1997; Arctic Ocean; Laptev Sea; Lena River Delta; SAR; SAR image; SAR imagery; backscatter; bottomfast ice; coast; coastal sea-ice type; dielectric properties; ice type; measurement technique; microstructure; ocean; parent water-mass salinity; radar penetration depth; radar remote sensing; radar scattering; radar signature; sea ice; spatial variation; synthetic aperture radar; temporal variability; zonation; Antarctica; Arctic; Backscatter; Dielectrics; Microstructure; Radar detection; Rivers; Sea ice; Sea measurements; Springs;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
DOI :
10.1109/IGARSS.1999.775018
