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Images, UC QuakeStudies

A photograph of a member of the Wellington Emergency Management Office Emergency Response Team standing in front of the earthquake-damaged Avonmore House on Hereford Street. Sections of the walls have crumbled, spilling bricks and masonry onto the footpath and street below. Many of the windows have also warped, breaking the glass. USAR codes have been spray-painted on one of the columns. A red sticker taped to the door indicates that the building is unsafe to enter.

Images, Alexander Turnbull Library

Photographically reproduced postcard shows a semi-humorous illustration by J L Martin of the Provincial Government buildings in Christchurch, seen looking southeast from across the intersection of Durham and Armagh Streets, imagined as warped and twisting in the Murchison Earthquake of 1929. Speech bubbles come from the mouths of some small figures: "Women & children first", "Order please", "Oh for the wings of a dove", "Stop that jazzing up there", "Wheres my puff box". The title below the picture is: "The camera cannot lie". The artist J L Martin has handwritten a message on the verso. In 1928, this building was occupied by the Commissioner of Crown Lands, the Receiver of Land Revenue, the Registrar of Deeds, the Lands Transfer Office and the Lands & Survey Department (See Wises directory 1928, page 214) Other Titles - Christchurch, Christmas Inscriptions: Verso - centre - With kind remembrances / From yours sincerely / J L Martin Quantity: 1 Other printed ephemera item(s). Physical Description: Photograph on postcard, 88 x 137 mm. Provenance: Ms McLean was the granddaughter of Arthur John Wicks, the Chief Draughtsman, Head Office, New Zealand Lands & Survey Department. He had worked with Crown Lands in Blenheim before moving to Wellington in 1917. The artist J L Martin sent the card to Mr Wicks.

Research papers, University of Canterbury Library

The Mw 7.1 Darfield earthquake generated a ~30 km long surface rupture on the Greendale Fault and significant surface deformation related to related blind faults on a previously unrecognized fault system beneath the Canterbury Plains. This earthquake provided the opportunity for research into the patterns and mechanisms of co-seismic and post-seismic crustal deformation. In this thesis I use multiple across-fault EDM surveys, logic trees, surface investigations and deformation feature mapping, seismic reflection surveying, and survey mark (cadastral) re-occupation using GPS to quantify surface displacements at a variety of temporal and spatial scales. My field mapping investigations identified shaking and crustal displacement-induced surface deformation features south and southwest of Christchurch and in the vicinity of the projected surface traces of the Hororata Blind and Charing Cross Faults. The data are consistent with the high peak ground accelerations and broad surface warping due to underlying reverse faulting on the Hororata Blind Fault and Charing Cross Fault. I measured varying amounts of post-seismic displacement at four of five locations that crossed the Greendale Fault. None of the data showed evidence for localized dextral creep on the Greendale Fault surface trace, consistent with other studies showing only minimal regional post-seismic deformation. Instead, the post-seismic deformation field suggests an apparent westward translation of northern parts of the across-fault surveys relative to the southern parts of the surveys that I attribute to post-mainshock creep on blind thrusts and/or other unidentified structures. The seismic surveys identified a deformation zone in the gravels that we attribute to the Hororata Blind Fault but the Charing Cross fault was not able to be identified on the survey. Cadastral re-surveys indicate a deformation field consistent with previously published geodetic data. We use this deformation with regional strain rates to estimate earthquake recurrence intervals of ~7000 to > 14,000 yrs on the Hororata Blind and Charing Cross Faults.