Snow-accumulation studies in Antarctica with ground-penetrating radar using 50,100 and 800 MHz antenna frequencies
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Snow-accumulation studies in Antarctica with ground-penetrating radar using 50,100 and 800 MHz antenna frequencies. / Sinisalo, A; Grinsted, Aslak; Moore, J C; Kärkäs, E; Petterson, R.
In: Annals of Glaciology, Vol. 37, No. 1, 2003, p. 194-198.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Snow-accumulation studies in Antarctica with ground-penetrating radar using 50,100 and 800 MHz antenna frequencies
AU - Sinisalo, A
AU - Grinsted, Aslak
AU - Moore, J C
AU - Kärkäs, E
AU - Petterson, R
N1 - Paper id:: 10.3189/172756403781815825
PY - 2003
Y1 - 2003
N2 - Snow radar profiles were measured in Dronning Maud Land, East Antarctica, in the vicinity of the Finnish research station Aboa during austral summer 1999/2000. The aim was to study the annual layering in the upper 50 m of the snowpack and to compare the results obtained by three radar antenna frequencies (50,100 and 800 MHz). Intercomparison of the radar profiles measured by the three frequencies shows that some individual internal layers are visible with different antennas. Sparse accumulation-rate data from stake measurements and snow pits are compared with layer depths. The comparison reveals a great deal of scatter due to the large interannual variability in accumulation patterns. Using the radar layers as isochrones together with a model of depth-density-radarwave velocity allows the individual accumulation data to be integrated, and a better estimate of accumulation patterns is obtained. Using the radar layering seems to be a much better method of estimating accumulation rate in this region than using a short series of stake measurements, even in the absence of deep ice cores to directly date the radar layering.
AB - Snow radar profiles were measured in Dronning Maud Land, East Antarctica, in the vicinity of the Finnish research station Aboa during austral summer 1999/2000. The aim was to study the annual layering in the upper 50 m of the snowpack and to compare the results obtained by three radar antenna frequencies (50,100 and 800 MHz). Intercomparison of the radar profiles measured by the three frequencies shows that some individual internal layers are visible with different antennas. Sparse accumulation-rate data from stake measurements and snow pits are compared with layer depths. The comparison reveals a great deal of scatter due to the large interannual variability in accumulation patterns. Using the radar layers as isochrones together with a model of depth-density-radarwave velocity allows the individual accumulation data to be integrated, and a better estimate of accumulation patterns is obtained. Using the radar layering seems to be a much better method of estimating accumulation rate in this region than using a short series of stake measurements, even in the absence of deep ice cores to directly date the radar layering.
M3 - Journal article
VL - 37
SP - 194
EP - 198
JO - Annals of Glaciology
JF - Annals of Glaciology
SN - 0260-3055
IS - 1
ER -
ID: 9832772