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From Greenland to American Samoa: A Summary of Summer 2024 Expeditions with HROV Nereid Under Ice and AUV Sentry
Deep Submergence Laboratory
Woods Hole Oceanographic Institution
This presentation will provide an overview of two expeditions completed during summer 2024 with HROV Nereid Under Ice (NUI) and AUV Sentry. NUI, a specialized vehicle designed to transit long horizontal distances via a lightweight fiber optic cable, spent the summer in the fjords of Greenland. By providing mapping, sampling, and other sensing capabilities, NUI acquired critical data for observing sedimentation processes at the termini of outlet glaciers. Sentry completed ten dives off the coast of American Samoa, performing mapping tasks while logging chemical and biological data to support multi-vehicle operations with the Ocean Exploration Trust’s ROV Hercules. Discussion will focus on the technical aspects of vehicle operations in the context of the science team objectives.
Photo Credits
Sentry: Chris German
NUI: Constantino Panagopulos / University of Texas Institute for Geophysics
Dr. Allisa Dalpe is currently a Research Engineer in the Deep Submergence Laboratory at the Woods Hole Oceanographic Institution. She graduated from the University of New Hampshire with her PhD in Ocean Engineering in 2021. Dr. Dalpe received her B.A. in Physics from Connecticut College in 2016. Her dissertation work spanned the research areas of autonomous decision-making, mission planning, path-planning, and test and evaluation methods for autonomous systems. Since beginning at WHOI, she has participated in over ten expeditions working with deep-sea vehicles Nereid Under Ice (NUI), Sentry, Clio, Orpheus, and Alvin. While on shore, she is involved with the development of robotics software tools, integration of remote operations, performing data analysis, and modeling and simulation of fiber optic tether for subsea applications.
