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Typically, instability is rainfall-induced, often owing to a high-intensity rainfall event from extra-tropical cyclones, following wetter months when antecedent soil moisture has increased. Using remote sensing, field surveys and laboratory testing, we report on some emerging slope instability hazards in the eastern suburbs of the coastal city of Gisborne, on the North Island. Retrogressive failure of the main landslide (at Wallis Road) is continuing and has already led to the abandonment of one dwelling, and an adjacent landslide (at Titirangi Drive) appears to be in an incipient phase of failure. The Wallis Road landslide has been particularly active from mid-2017, with slumping of the headscarp area changing to a constrained mudflow downslope, which then descends a cliff before terminating on the beach. In contrast, the incipient Titirangi Drive landslide at present displays much more subtle effects of deformation. Although activity at both landslides appears to be linked to rainfall-induced increases in soil moisture, this is due to the effects of prolonged periods of rainfall rather than the passage of high-intensity cyclonic storms.<\/jats:p>","DOI":"10.1144\/qjegh2021-087","type":"journal-article","created":{"date-parts":[[2022,1,11]],"date-time":"2022-01-11T14:05:22Z","timestamp":1641909922000},"update-policy":"https:\/\/doi.org\/10.1144\/crossmark-policy","source":"Crossref","is-referenced-by-count":5,"title":["Preliminary investigation of emerging suburban landsliding in Gisborne, New Zealand"],"prefix":"10.1144","volume":"55","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4223-9063","authenticated-orcid":false,"given":"Matthew E.","family":"Cook","sequence":"first","affiliation":[{"name":"School of Environment, The University of Auckland, Private Bag 92019, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1030-3246","authenticated-orcid":false,"given":"Martin S.","family":"Brook","sequence":"additional","affiliation":[{"name":"School of Environment, The University of Auckland, Private Bag 92019, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0377-7803","authenticated-orcid":false,"given":"Jon","family":"Tunnicliffe","sequence":"additional","affiliation":[{"name":"School of Environment, The University of Auckland, Private Bag 92019, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Murry","family":"Cave","sequence":"additional","affiliation":[{"name":"Gisborne District Council, 15 Fitzherbert Street, Gisborne 4010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Noah P.","family":"Gulick","sequence":"additional","affiliation":[{"name":"School of Environment, The University of Auckland, Private Bag 92019, Auckland 1010, New Zealand"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1881","published-online":{"date-parts":[[2022,2,14]]},"reference":[{"key":"e_1_3_6_2_1","volume-title":"Methods of testing soils for engineering purposes \u2013 soil classification tests \u2013 dispersion \u2013 determination of Emerson class number of a soil","author":"AS 1289.3.8.1","year":"2006","unstructured":"AS 1289.3.8.1:2006. 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