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- W4200012009 abstract "<strong class=journal-contentHeaderColor>Abstract.</strong> The retrieval of continuous ice core records of more than 1âMyr is an important challenge in palaeo-climatology. For identifying suitable sites for drilling such ice, knowledge of the subglacial topography and englacial layering is crucial. For this purpose, extensive ground-based ice radar surveys were carried out over Dome Fuji in the East Antarctic plateau during the 2017/18 and 2018/19 austral summers by the Japanese Antarctic Research Expedition, on the basis of ground-based radar surveys conducted over the previous <span class=inline-formula>â¼</span>â30 years. High-gain Yagi antennae were used to improve the antenna beam directivity, thereby significantly decreasing hyperbolic features of unfocused along-track diffraction hyperbolae in the echoes from mountainous iceâbedrock interfaces. We combined the new ice thickness data with the previous ground-based data, recorded since the 1980s, to generate an accurate high-spatial-resolution (up to 0.5âkm between survey lines) ice thickness map. This map revealed a complex landscape composed of networks of subglacial valleys and highlands. Based on the new map, we examined the roughness of the iceâbed interface, the bed surface slope, the driving stress of ice and the subglacial hydrological condition. These new products and analyses set substantial constraints on identifying possible locations for new drilling. In addition, our map was compared with a few bed maps compiled by earlier independent efforts based on airborne radar data to examine the difference in features between datasets. Our analysis suggests that widely available bed topography products should be validated with in situ observations where possible." @default.
- W4200012009 created "2021-12-31" @default.
- W4200012009 date "2021-11-22" @default.
- W4200012009 modified "2023-10-01" @default.
- W4200012009 title "Comment on tc-2021-266" @default.
- W4200012009 doi "https://doi.org/10.5194/tc-2021-266-rc2" @default.
- W4200012009 hasPublicationYear "2021" @default.
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