dc.contributor.author |
Palma, Alex |
|
dc.contributor.author |
Garrill, Rosie |
|
dc.contributor.author |
Brook, Martin S |
|
dc.contributor.author |
Richards, Nicholas |
|
dc.contributor.author |
Tunnicliffe, Jon |
|
dc.date.accessioned |
2021-11-03T04:41:02Z |
|
dc.date.available |
2021-11-03T04:41:02Z |
|
dc.date.issued |
2020-7-4 |
|
dc.identifier.issn |
1612-510X |
|
dc.identifier.uri |
https://hdl.handle.net/2292/57210 |
|
dc.description.abstract |
The historically unstable Sunkist Bay cliff in Auckland, New Zealand, is formed of weak Pleistocene alluvial sediments, infilling a paleovalley eroded into Miocene sandstone. Weathered tephra layers dip at low angles out of the cliff, and part-control stability. The last major failure prior to 2017 occurred in 2011, immediately to the west of the 2017 failure. Despite the long-term history of instability, over the last two decades, residential property construction has continued to < 10 m of the cliff edge. On 5 April 2017, ex-tropical cyclone Debbie delivered 157 mm of rainfall in 24 h, the 3rd highest 24-h total in 40 years. This was preceded 1 month earlier by 210 mm of rainfall on 8 March (the ‘Tasman Tempest’ storm), locally a 1 in 100-year event. A seawall constructed at the base of the cliff may have acted to inhibit pore-water pressure reduction during March–April 2017, because horizontal drains were absent in the seawall directly in front of the 2017 slope failure. Irrespective of the exact process-mechanisms of the 2017 failure, this case study highlights the importance of careful land use planning and imposition of adequate setback distances in coastal zones in New Zealand, and globally. |
|
dc.language |
en |
|
dc.publisher |
Springer Science and Business Media LLC |
|
dc.relation.ispartofseries |
Landslides |
|
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
|
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
|
dc.subject |
Science & Technology |
|
dc.subject |
Technology |
|
dc.subject |
Physical Sciences |
|
dc.subject |
Engineering, Geological |
|
dc.subject |
Geosciences, Multidisciplinary |
|
dc.subject |
Engineering |
|
dc.subject |
Geology |
|
dc.subject |
Coastal landslide |
|
dc.subject |
Rainfall triggering |
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dc.subject |
Shear strength |
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dc.subject |
New Zealand |
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dc.subject |
Setback |
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dc.subject |
SOUTH-AUCKLAND |
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dc.subject |
STRATIGRAPHY |
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dc.subject |
FAILURE |
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dc.subject |
SETBACK |
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dc.subject |
MODEL |
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dc.subject |
RATES |
|
dc.subject |
0406 Physical Geography and Environmental Geoscience |
|
dc.subject |
0905 Civil Engineering |
|
dc.title |
Reactivation of coastal landsliding at Sunkist Bay, Auckland, following ex-Tropical Cyclone Debbie, 5 April 2017 |
|
dc.type |
Journal Article |
|
dc.identifier.doi |
10.1007/s10346-020-01474-8 |
|
pubs.issue |
11 |
|
pubs.begin-page |
2659 |
|
pubs.volume |
17 |
|
dc.date.updated |
2021-10-12T09:21:42Z |
|
dc.rights.holder |
Copyright: The author |
en |
pubs.author-url |
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000545286700001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=6e41486220adb198d0efde5a3b153e7d |
|
pubs.end-page |
2669 |
|
pubs.publication-status |
Published |
|
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
|
pubs.subtype |
Journal |
|
pubs.elements-id |
805536 |
|
dc.identifier.eissn |
1612-5118 |
|
pubs.online-publication-date |
2020-7-4 |
|