Field reconnaissance of the Rawene Slip urban landslide, Auckland, New Zealand

被引:0
|
作者
Martin S. Brook
机构
[1] University of Auckland,School of Environment
来源
Landslides | 2018年 / 15卷
关键词
Urban; Landslide; Slumping; Auckland; Vibration; Piling-induced;
D O I
暂无
中图分类号
学科分类号
摘要
A brief investigation of an ongoing urban landslide complex in Auckland, New Zealand, is presented. After progressive deformation of a carpark surface in the centre of Birkenhead over several months, two landslides occurred, in October and November 2017. The landslides occurred adjacent to each other at the head of the Rawene Reserve area, with rotational slumping forming headscarps and each landslide developing an earthflow component with a runout over 100 m. The failures appear to be formed of fill and residual soil. While the residual soil is formed on Miocene East Coast Bays Formation sands and silts, historical aerial images reveal that the fill was emplaced on the slopes in the 1970s and 1980s within gullies, to allow the carpark to be built. The precise triggering mechanism of the landslide activity is unknown. Although rainfall-triggered landslides occurred over much of the Auckland region in early 2017 due to the passing of ex-tropical cyclone Debbie, total rainfall for 2017 in the area (1299 mm) closely mirrored the 1980–2010 ‘normal’ of 1231 mm. Anecdotal evidence from eyewitnesses in days leading up to the first landslide highlighted resident’s concerns about the effects of vibration from piling operations at a construction site adjacent to the carpark, where cracking and subsidence was evident. Thus, given the timeline of observations recorded at the site, and local geology, progressive failure along a weak surface, affected by dynamic loading from piling-induced vibrations, may have increased pore pressure and decreased the shear strength of the residual soil and fill.
引用
收藏
页码:2295 / 2302
页数:7
相关论文
共 50 条
  • [1] Field reconnaissance of the Rawene Slip urban landslide, Auckland, New Zealand
    Brook, Martin S.
    [J]. LANDSLIDES, 2018, 15 (11) : 2295 - 2302
  • [2] Urban intensification in Auckland, New Zealand: A challenge for new urbanism
    Dixon, J
    Dupuis, A
    [J]. HOUSING STUDIES, 2003, 18 (03) : 353 - 368
  • [3] Geology and geological hazards of the Auckland urban area, New Zealand
    Edbrooke, SW
    Mazengarb, C
    Stephenson, W
    [J]. QUATERNARY INTERNATIONAL, 2003, 103 : 3 - 21
  • [4] Soil CO2 flux baseline in an urban monogenetic volcanic field: the Auckland Volcanic Field, New Zealand
    Agnès Mazot
    Elaine R. Smid
    Luitgard Schwendenmann
    Hugo Delgado-Granados
    Jan Lindsay
    [J]. Bulletin of Volcanology, 2013, 75
  • [5] Soil CO2 flux baseline in an urban monogenetic volcanic field: the Auckland Volcanic Field, New Zealand
    Mazot, Agnes
    Smid, Elaine R.
    Schwendenmann, Luitgard
    Delgado-Granados, Hugo
    Lindsay, Jan
    [J]. BULLETIN OF VOLCANOLOGY, 2013, 75 (11) : 1 - 9
  • [6] Some challenges of monitoring a potentially active volcanic field in a large urban area: Auckland volcanic field, New Zealand
    Caroline L. Ashenden
    Jan M. Lindsay
    Steven Sherburn
    Ian E. M. Smith
    Craig A. Miller
    Peter E. Malin
    [J]. Natural Hazards, 2011, 59 : 507 - 528
  • [7] Some challenges of monitoring a potentially active volcanic field in a large urban area: Auckland volcanic field, New Zealand
    Ashenden, Caroline L.
    Lindsay, Jan M.
    Sherburn, Steven
    Smith, Ian E. M.
    Miller, Craig A.
    Malin, Peter E.
    [J]. NATURAL HAZARDS, 2011, 59 (01) : 507 - 528
  • [8] Elliptical boundary of an intraplate volcanic field, Auckland, New Zealand
    Sporli, KB
    Eastwood, VR
    [J]. JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH, 1997, 79 (3-4) : 169 - 179
  • [9] CHANGES IN THE NATIVE PLANT COVER OF URBAN AUCKLAND, NEW-ZEALAND
    ESLER, AE
    [J]. NEW ZEALAND JOURNAL OF BOTANY, 1991, 29 (02) : 177 - 196
  • [10] Visitor safety in urban tourism environments: the case of Auckland, New Zealand
    Barker, M
    Page, SJ
    [J]. CITIES, 2002, 19 (04) : 273 - 282