CV16034 GATEWAYS III Survey | Internal structure of the ridges of the Porcupine Saddle

This survey, led by Maynooth University in associated with the Geological Survey Ireland, was an investigation of submerged ridges off the west coast of Ireland. Linked previously with ice movement, these ridges can help reveal information on the dynamics of the British Irish Ice Sheet during the height of the last glacial maximum, around twenty thousand years ago. The cruise was also a training exercise in marine research for recent graduates from Cork and Dublin City Universities. Gateways 3 voyage is a continuation of previous research cruises to improve our understanding of ice drainage routes (iceberg “gateways”). The survey took place off the west coast of Ireland on board the Marine Institute's R.V. Celtic Voyager. GATEWAYS III; Internal structure of the ridges of the Porcupine Saddle: The objective of this survey is to understand the formation of the Porcupine Saddle ridges and study their potential origin as subglacial features from the last glaciation.本调查由梅努斯大学（Maynooth University）主导，并与爱尔兰地质调查局（Geological Survey Ireland）合作开展，聚焦爱尔兰西海岸外的水下脊状构造研究。此类脊状构造此前被关联至冰体运动，可用于揭示约2万年前末次冰盛期巅峰阶段，不列颠-爱尔兰冰盖（British Irish Ice Sheet）的动力学特征。本次科考航次同时为科克大学与都柏林城市大学（Dublin City University）的应届毕业生提供了海洋研究实训机会。"门户三号"（Gateways 3）航次是既往科考航次的延续，旨在深化对冰体排泄通道（冰山"门户"）的认知。本次调查依托爱尔兰海洋研究所（Marine Institute）的"凯尔特航行者号"（R.V. Celtic Voyager）科考船开展，作业区域位于爱尔兰西海岸外海域。【GATEWAYS III：波尔库平海脊（Porcupine Saddle）脊状构造内部结构】本次调查的目标为解析波尔库平海脊的形成机制，并探究其作为末次冰期冰下构造的潜在成因。