Mapping of seabed and bathymetry in Alssund, Sønderborg. Seismic and acoustic mapping for The Green Water Research Project

Matthew Owen, Jørgen O. Leth

Publikation: Bog/rapportRapport (offentligt tilgængelig)

Abstrakt

The Green Water Research Project (GWRP) has asked GEUS to perform a combined geological and bathymetrical survey using high-resolution and high-accuracy multibeam bathymetry, side scan sonar and sub-bottom profiler data in Alssund in Sønderborg. The combination of information on the seabed sediment types and thickness and a detailed bathymetry has shown that at suitable locations for siting the prototype of heat exchange installation are available. There are extensive areas where the water depth exceeds 18 m with sandy or gravelly sediments present. However, the seismic data shows evidences of the presence of gas in large areas of the sub-surface, indicating the presence of fine grained, muddy sediments.

A basin adjacent to the SDU Sønderborg campus seems to be one of the most suitable locations, with water depths reaching 23.6 m and sandy sediments appearing. Steep gradients encountered on the channel margin and the risk of slope failure during or after pipeline installation could be a concern here. An alternative potential area for the project an infilled channel has been designated in Alssund west of Odden.

It is strongly recommended to perform a sediment sampling programme to verify the seismic and acoustic
interpretations.
OriginalsprogEngelsk
UdgivelsesstedCopenhagen
ForlagGEUS
Rekvirerende organisationGreen Water Research Project (GWRP)
Antal sider26
Vol/bind2016
DOI
StatusUdgivet - 20 dec. 2016

Publikationsserier

NavnDanmarks og Grønlands Geologiske Undersøgelse Rapport
ForlagGEUS
Nr.62
Vol/bind2016

Emneord

  • Denmark

Programområde

  • Programområde 5: Natur og klima

Fingeraftryk

Dyk ned i forskningsemnerne om 'Mapping of seabed and bathymetry in Alssund, Sønderborg. Seismic and acoustic mapping for The Green Water Research Project'. Sammen danner de et unikt fingeraftryk.

Citationsformater