Fig. 2: Examples of OPTV image log debris inclusions and classifications (coloured bars). | Communications Earth & Environment

Fig. 2: Examples of OPTV image log debris inclusions and classifications (coloured bars).

From: Continuous borehole optical televiewing reveals variable englacial debris concentrations at Khumbu Glacier, Nepal

Fig. 2

a A single large clast in BH17-09 (Site 2). b Fine debris and small clasts in BH17-01 (Site 1). c Large clasts and fine, dispersed sediment in BH18-04 (Site 4). d High concentration of small clasts in BH17-01 (Site 1). e A high concentration, discrete layer of fine sediment in BH17-13 (Site 3). f High concentration, discrete layers of small debris clasts, and fine sediment in BH17-13 (Site 3). g Very high concentration, discrete layers of fine sediment in BH17-01 (Site 1). All logs are unrolled to progress North-East-South-West-North from left to right. Saturated vertical reflections are superficial artefacts from the drilling process. Obscured parts of the images (i.e., b from N–S; c from SW–N; and d–g from N–SE) are due to turbid water (Supplementary Fig. 5 and ‘Methods’ section), and are excluded from all analysis.

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