Hexenloch (lake area)
As Hexenloch a sea area in which it is North Sea called that about 160 km from the Scottish Aberdeen is removed.
geology
When prospecting the Witch Grounds offshore oil field in the 1970s, irregularities on the seabed were found that were interpreted as the result of natural gas eruptions . However, the existence of methane hydrate and its release was still unknown at the time. In November 2000, when scientists at Sunderland University carried out more detailed investigations with a remote-controlled diving robot , an approximately 25 m long steel fishing trawler was found at a depth of 150 m , which naval historians dated from 1890 to 1930. The ship was wrapped in its fishing nets and stood completely unharmed on the sea floor. The researchers suspected that the ship's sinking was caused by methane gas escaping from the seabed . Australian researchers from Monash University in Melbourne carried out model calculations and laboratory tests. According to this, the density of the sea water can be reduced by gas bubbles , which increase during the ascent due to the falling pressure, but also by the foam caused by very small gas bubbles, so that the buoyancy of a ship is no longer guaranteed. This presumption as to the cause of the accident has been supported since the 1990s by the ongoing discovery of further methane hydrate deposits.
media
The German action film Bermuda Triangle North Sea (director: Nick Lyon ) from 2011 deals with the geophysical conditions of the witch's hole within a fictional story.
Web links
- BBC News Online: North Sea wreck in methane mystery on news.bbc.co.uk
- Bermuda Triangle mystery solved? It's a load of gas on theage.com.au
Footnotes
- ↑ RP-online, November 30, 2000: A huge gas bubble could have sunk the North Sea cutter ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Monsters of the deep on newscientist.com (English)
Coordinates: 57 ° 5 ′ 42 " N , 0 ° 13 ′ 40" E