1887

Abstract

The EdgeTech (4-24 kHz -Fish) is used in the range of 4 to 16 kHz to map the most recent, usually contaminated, top layer in the harbour and estuaries of the low tidal harbours of Bergen, Norway and Gothenburg, Sweden. The principal objective is to relate distribution patterns of the sediments with natural and man-induced processes such as sediment supply, currents, waves. storms, and vessel movements. In February and March surveys were carried out which covered the harbour areas of Bergen and Gothenburg. Both surveys succeeded in not only mapping the top sediments but also in obtaining profiles at Bergen in water depths exceeding 300 m despite the signal return period exceeding the transmission periods. In the Gothenburg estuary reflectors were obtained from 40 m below seabed despite the high frequency range of the Chirp signal showing profiles infilled channels (see Figure 2). The initial results for the H-SENSE study (Harbours: Silting and Environmental Sedimentology European) are presented for two harbour basins in Bergen and Gothenburg respectively. The study is being carried out jointly between universities and institutes in Sweden. Norway, the UK. Netherlands and Latvia within the EC-Directorate General 6 (Transport) research programme.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201407090
1998-09-14
2024-11-04
Loading full text...

Full text loading...

/content/papers/10.3997/2214-4609.201407090
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error