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This report documents the voyage objectives, outcomes and preliminary results of the GNS-Science-led R/V Tangaroa voyage TAN2205, which took place from 15 March to 7 April 2022 in the eastern Tasman Sea (Deepwater Taranaki Basin). The over-arching aim of the voyage was to acquire new information to help progress our understanding of the link between submarine landslides and tsunami in the Tasman Sea. The voyage is part of the 2021 Ministry of Business, Innovation & Employment (MBIE) Endeavour Smart Idea project ‘Assessing the risk of silent tsunami in the Tasman Sea / Te Tai-o-Rēhua’ (MBIE contract C05X2104). Bathymetric data acquired during TAN2205 builds on the area mapped during the previous voyage, TAN2111, in October–November 2021. The new dataset covers a mixture of mapped and previously unmapped areas of the seafloor, including the most comprehensive mapping of the Aotea Seamount and a new series of previously unmapped continental slope canyon heads. A total of 6361 km line length of TOPAS sub-bottom profile data was acquired to assist with the sampling strategy and provide context for long core samples at a later stage. A total of 36 multi-channel seismic reflection profiles were acquired, covering ~1350 km, which will assist with the advancement of new physical descriptions of buried prehistoric landslide units. The overall quality of the geophysical datasets collected is very good. A total of 79 m of seafloor and shallow sub-seafloor sediment cores and samples were collected using a mixed sampling strategy of rock dredges, long cores (piston and gravity) and multicores from 66 stations. The longest core recovery was 4.4 m in a distal location seaward of the Aotea Seamount. (The authors)

In March 2019, GNS Science and Ngāti Tama, in collaboration with Ngāti Mutunga, led a Te Kura Whenua wānanga at Pukearuhe Marae, Urenui, Taranaki. Te Kura Whenua is a community engagement initiative aimed at creating dialogue and sharing knowledge between scientists and Māori communities on geoscience-related topics, such as climate change, geological hazards and geological resources, and Māori perspectives on the whenua. The two-and-a-half day wānanga involved field-based and hands-on activity-based learning. This report outlines these activities and summarises the outcomes of the wānanga. A total of 12 participants and 8 facilitators attended the wānanga. Participants ranged in age and backgrounds. The experiential learning format of the wānanga appealed to the participants who gained a ‘western science’ view on geoscience-related topics and gave positive feedback on their experiences. The facilitators gained a better understanding of iwi perspectives on whakapapa, environmental protection and natural resources. The wānanga at Pukearuhe Marae adds to the successful line of iwi-focused GNS Science engagement initiatives under the Te Kura Whenua banner. (auth)