By Professor Dr. Costas Tsatsoulis, Dr. Ronald Kwok (auth.)
This booklet experiences fresh advances within the use of SAR imagery for operational functions and for aiding technological know-how investigations of the polar oceans. the $64000 parameters that are extracted from spaceborne SAR imagery are mentioned. Algorithms utilized in such analyses are defined and knowledge platforms utilized in generating the ocean ice items are provided.
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Additional info for Analysis of SAR Data of the Polar Oceans: Recent Advances
It appears from this relationship that changes in the snow cover both affecting and affected by Qc o may be detected by the SAR, whereas QCi appears to be independent of the observed changes in (TO in time series 2. In general, as the conductive flux decreases there is a decrease in (TO. The similarity in pattern between QCi and (TO in time series 1 suggests a slight covariance between the ice surface flux and (TO. In time series 2 the covariance of Qco with (TO and the lack of association with QCi suggests that (TO may be arising (at least partially) from the snow volume.
1994, 1996). The approximate ranges of backscatter variations and seasonal air temperatures are indicated. season and are summarized in Fig. 10. Also indicated in this figure are that the onset of melt and freezing proceed latitudinally over time, with melt occurring earliest in the lower latitudes and freezing in the higher latitudes. Lastly, throughout the year, open water returns are sensitive to wind speed and have a wide range of returns (-20 to -5 dB) that often overlaps all levels of ice signatures.
Figure 13 shows two four-image segments in the high Arctic which cover nearly the same area, one (Fig. 13 a,b) from June 30 (which includes the same data as Fig. 12) and Fig. 13. a Sequence of four ERS-1 SAR images from June 30,1992, centered at 82°N, 140 W (copyright ESA). b Output display of floes, discarded floes, open water and substrate for a. C Sequence of four ERS-1 SAR images from July 4, 1992, centered at 82°N, 138°N (copyright ESA). -K. SOH, C. TSATSOULIS, AND B. HOLT another data set (Fig.