Sea-ice HI-Photogrammetry Cape Evans (SIHIPCE) 2023

Dataset collected at Cape Evans, Antarctica, November 2023 as part of a long-term NIWA benthic monitoring program under the Antarctica New Zealand event number K882A.The dataset includes multiple sea-ice and seafloor hyperspectral imaging transects (10-40 meters long) coupled with normal red, green, and blue (RGB) imagery from a dual camera machine vision system. The data were acquired using the remotely operated vehicle (ROV) HIcyBot system, funded by the Australian Centre for Excellence in Antarctic Research (ACEAS). A GNSS-integrated USBL transponder equipped onto the ROV allowed every frame of the high frequency hyperspectral imager to be timestamped via GPS clock to acoustically provided underwater position and attitude.The dataset also includes hyperspectral imaging scans of sampled/retrieved organisms found at the seafloor, to support habitat mapping algorithm development (e.g., algae, urchins, sea-stars, etc.). The ROV was tested as part of an ACEAS Program 2 subcomponent that involved the design of the new under-ice hyperspectral imaging and photogrammetric payload mounted onto the HIcyBot ROV. The overarching goal of the systems was to be able to acquire information of under the sea-ice sympagic and benthic communities (e.g., biomass and photophysiology) and deliver a multi-scale array of biophysical data that can be assimilated with known information in the region and monitor fine-scale change. Through the analysis of new and existing bio-optical under-ice data, the dataset aims to ultimately envisions the delivery of new monitoring tools and algorithms that can provide support for modelling efforts and reveal complex biophysical processes under a changing Antarctic Sea ice.***NOTE: Data processing is still underway (April 2025). Please contact [e-mail] for access to data.***

本数据集于2023年11月在南极洲埃文斯角采集，隶属于新西兰南极局（Antarctica New Zealand）事件编号K882A，为新西兰水与大气研究所（National Institute of Water and Atmospheric Research, NIWA）长期底栖监测计划的组成部分。
数据集包含多条长度为10-40米的海冰与海底高光谱成像（hyperspectral imaging）断面，搭配由双摄像头机器视觉系统采集的常规红绿蓝（RGB）影像。本数据由澳大利亚南极研究卓越中心（Australian Centre for Excellence in Antarctic Research, ACEAS）资助的遥控水下机器人（remotely operated vehicle, ROV）HIcyBot系统采集获取。
该ROV搭载了集成全球导航卫星系统（Global Navigation Satellite System, GNSS）的超短基线（Ultra Short Baseline, USBL）应答器，可通过GPS时钟为高频高光谱成像仪的每一帧数据打上时间戳，并结合声学方式获取水下位置与姿态信息。
数据集还涵盖了海底采样/回收生物体的高光谱扫描影像，用于支撑栖息地制图算法的研发工作（例如藻类、海胆、海星等类群）。
本ROV作为ACEAS项目2子任务的一部分完成测试，该子任务涉及为HIcyBot ROV定制新型冰下高光谱成像与摄影测量载荷。
该系统的核心目标为获取海冰下冰内与底栖生物群落的相关信息（例如生物量及光生理特性），并产出多尺度生物物理数据集，可与该区域已有认知数据融合，进而实现精细尺度变化监测。
通过对新获取及已有的冰下生物光学数据开展分析，本数据集最终旨在开发新型监测工具与算法，为建模工作提供支撑，并揭示南极海冰变化背景下复杂的生物物理过程。
***注：数据处理工作仍在进行中（2025年4月）。如需获取数据集，请联系[e-mail]。***