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GEOREF RECORD

The Kaiapit Landslide; events and mechanisms

M. Peart
The Kaiapit Landslide; events and mechanisms (in Influence of faults on engineering construction and hydrogeology, Anonymous)
The Quarterly Journal of Engineering Geology (1991) 24 (4): 399-411

Abstract

The landslide at Kaiapit occurred on the morning of 6 September 1988 in the Finisterre Range of Papua New Guinea and resulted in 74 fatalities. The landslide involved an estimated 2 km (super 3) of debris which covered an area of 11.4 km (super 2) and left a back-scarp some 1600 m high. The debris ran out in three flows for approximately 6 km in 5 minutes and velocities of 180km/h have been estimated. No single cause for the initiation of the landslide has been determined. It is felt that its location in a tectonically and seismically active region, the tropical climate and an inherently weak rock mass were fundamental contributary factors. The failure mechanisms are considered to have been massive planar slides. The debris assumed a final angle of rest of 6 degrees ; this may be explained by a combination of the concepts of acoustic fluidization and air entrapment. The landslide debris resulted in the formation of four dams, which had all breached within eight months of the event. Active erosion of the debris is resulting in the aggrading of river bed levels in the area.


ISSN: 0481-2085
Coden: QJEGA7
Serial Title: The Quarterly Journal of Engineering Geology
Serial Volume: 24
Serial Issue: 4
Title: The Kaiapit Landslide; events and mechanisms
Title: Influence of faults on engineering construction and hydrogeology
Author(s): Peart, M.
Author(s): Anonymous
Affiliation: Pengurusan Lebuhraya Berhad, Kuala Lumpur, Malaysia
Pages: 399-411
Published: 1991
Text Language: English
Publisher: Scottish Academic Press; Geological Society of London, Edinburgh, United Kingdom
References: 14
Accession Number: 1992-005788
Categories: Engineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables, sects., sketch maps
S11°00'00" - S00°10'00", E141°00'00" - E156°00'00"
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1992
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