Sand waves occur in small patches both north and south of the islands, but they never exceed 0.5 m in height or 20 m in wavelength. Click on the figures for larger images. A bathymetric map of the study area. Depths are contoured in 2-m intervals, have been corrected for tides, and are adjusted to mean sea level. Small dashed lines are the tracklines along which the geophysical data were collected.
Figure also shows the locations of seismic profiles shown in the next figure.
Boulders are clearly present on the surface of the prolonged acoustic facies. Profile across the north-central part of the study area showing the infilling of topographic lows in the irregular surface of the prolonged acoustic facies by glaciolacustrine sediments. Examples of the transparent and layered facies are also labeled on these profiles. Locations of the profiles are shown on the bathymetric and echo-character maps. The map also shows the areas within which the seismic facies of the Holocene sediments are predominantly layered or transparent.