Landslides BGS 11
Landslides BGS 11 : UK Examples. (1) Holbeck Hall landslide, Scarborough, North Yorkshire, England. The Holbeck Hall Hotel was destroyed as a result of a landslide that took place over a period between the 3rd and 5th of June 1993. Following an unusually wet period in May, a pre-existing (relict) landslide reactivated and began to move downslope, the bulk of the movement taking place overnight. The foundation of the hotel was partially undermined and most of the structure of the hotel subsequently collapsed. The remains of the hotel were later demolished. The movement of the slide and collapse of the hotel was sufficiently slow to allow residents to be evacuated and electricity and gas supplies to be switched off before they caused fire. (2) St Dogmaels landslide, Pembrokeshire, Wales. On 14th February 1994, landsliding was reported on slopes above the village of St Dogmaels. This landslide followed a period of heavy rainfall. Although the landslide appeared to be slow-moving and did not immediately threaten the village, provisions were made to implement the local emergency plan, which involved evacuating the village. This preparation was led by the police with the support of other emergency services and the military. On advice from engineering geologists, it was decided not to implement the emergency plan, although people from houses located on the landslide were evacuated. Several houses were severely affected and damage was caused to an 11 kV power line and to water mains supplies. In the event, the landslide did not affect the main village. (3) Nefyn landslide, Lleyn Peninsula, North Wales. On 2nd January 2001, a fatal landslide occurred in the coastal village of Nefyn. A series of small slides swept two cars over the cliff and onto the beach below. Tragically one of the occupants was killed and another seriously injured in the incident. Nefyn Bay is between Penrhyn Nefyn and Penrhyn Bodeilas and has been subject to minor landsliding activity for many years. The landslides of January 2001 occurred after a period of heavy rainfall along a stretch of coast that comprises weak superficial deposits. The amount of water and the weak nature of the deposits contributed to the instability. Movements may be seen across the country and the effects of these may have an economic impact. Some communities are built on old, large, slow moving landslides, such as Ventnor on the Isle of Wight or parts of Lyme Regis in Dorset. A worst case scenario event would be for a landslide such as these to undergo rapid movement. This would most likely cause a large economic loss locally and potentially loss of life
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