Slope failures in the Ochil Hills, Scotland, November 1984

A. Jenkins, Philip Ashworth, R.I. Ferguson, I.C. Grieve, P. Rowling, T.A. Stott

Research output: Contribution to journalArticle

Abstract

Intense rainfall in November 1984 caused several slope failures on the steep slopes of the Ochil Hills. Each failure was of soil and till, no more than 2 m thick over bedrock, in a steep bowl. From 30–350 m3 of sediment was removed. Failure seems to have been by shallow sliding triggered by saturation, but each slide became a debris flow, the largest one (Menstrie) filling a house with mud which was at twice the liquid limit two days after the event. The storm which caused the failures had an estimated recurrence interval of 50 years but the frequency of heavy rain is increasing and similar failures occurred nearby the following year.
Original languageEnglish
Pages (from-to)69-76
Number of pages8
JournalEarth Surface Processes and Landforms
Volume13
Issue number1
Publication statusPublished - 1 Jan 1988

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liquid limit
recurrence interval
slope failure
debris flow
sliding
bedrock
mud
saturation
rainfall
sediment
soil
rain

Keywords

  • Rainfall recurrence interval
  • Soil moisture content
  • Shallow slide
  • Debris flow

Cite this

Jenkins, A., Ashworth, P., Ferguson, R. I., Grieve, I. C., Rowling, P., & Stott, T. A. (1988). Slope failures in the Ochil Hills, Scotland, November 1984. Earth Surface Processes and Landforms, 13(1), 69-76.
Jenkins, A. ; Ashworth, Philip ; Ferguson, R.I. ; Grieve, I.C. ; Rowling, P. ; Stott, T.A. / Slope failures in the Ochil Hills, Scotland, November 1984. In: Earth Surface Processes and Landforms. 1988 ; Vol. 13, No. 1. pp. 69-76.
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Jenkins, A, Ashworth, P, Ferguson, RI, Grieve, IC, Rowling, P & Stott, TA 1988, 'Slope failures in the Ochil Hills, Scotland, November 1984', Earth Surface Processes and Landforms, vol. 13, no. 1, pp. 69-76.

Slope failures in the Ochil Hills, Scotland, November 1984. / Jenkins, A.; Ashworth, Philip; Ferguson, R.I.; Grieve, I.C.; Rowling, P.; Stott, T.A.

In: Earth Surface Processes and Landforms, Vol. 13, No. 1, 01.01.1988, p. 69-76.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Slope failures in the Ochil Hills, Scotland, November 1984

AU - Jenkins, A.

AU - Ashworth, Philip

AU - Ferguson, R.I.

AU - Grieve, I.C.

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AU - Stott, T.A.

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AB - Intense rainfall in November 1984 caused several slope failures on the steep slopes of the Ochil Hills. Each failure was of soil and till, no more than 2 m thick over bedrock, in a steep bowl. From 30–350 m3 of sediment was removed. Failure seems to have been by shallow sliding triggered by saturation, but each slide became a debris flow, the largest one (Menstrie) filling a house with mud which was at twice the liquid limit two days after the event. The storm which caused the failures had an estimated recurrence interval of 50 years but the frequency of heavy rain is increasing and similar failures occurred nearby the following year.

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KW - Shallow slide

KW - Debris flow

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Jenkins A, Ashworth P, Ferguson RI, Grieve IC, Rowling P, Stott TA. Slope failures in the Ochil Hills, Scotland, November 1984. Earth Surface Processes and Landforms. 1988 Jan 1;13(1):69-76.