Landslides and liquefaction generated by the Cook Strait and Lake Grassmere earthquakes

• DOI: 10.5459/bnzsee.46.4.196-200
• Publication Date: 2019-08-29T21:54:29Z
• Authors: R. Van Dissen; M. McSaveney; D. Townsend; G. Hancox; T.A. Little; W. Ries; N. Perrin; G. Archibald; G. Dellow; C. Massey; S. Misra
• Keywords: 01 natural sciences; 0105 earth and related environmental sciences

Following both the Cook Strait earthquake (Mw 6.6; 21 July, 2013) and Lake Grassmere 16 August, reconnaissance visits were made of epicentral regions to document general distribution extend landslides, liquefaction, other ground damage effects generated by these earthquakes. The extent landsliding in central New Zealand two earthquakes was at lower end expected range for shallow magnitudes. Liquefaction substantially less than those 2010-2011 Canterbury Christchurch area, despite fact that comparable size proximity, impacted grossly similar geological settings. There is no evidence primary ground-surface fault rupture during earthquake.