Core Viewpoint - The article highlights the ongoing maintenance work of large marine observation buoys by the South China Sea Investigation Center, emphasizing the importance of continuous monitoring of marine environmental factors for the development of green marine energy [1] Group 1: Maintenance Operations - The South China Sea Investigation Center's hydrometeorological team is conducting annual maintenance on four large marine observation buoys with a diameter of 10 meters [1] - These buoys are equipped with various sensors to monitor ocean wind fields, waves, and other factors, enabling long-term continuous observation [1] - Despite adverse sea conditions influenced by winter winds, technical personnel successfully managed the disassembly, inspection, and data recovery of core equipment [1] Group 2: Importance of Marine Energy - Offshore wind energy and wave energy are identified as key areas for the development and utilization of marine green energy [1] - The South China Sea Investigation Center aims to enhance the construction of a three-dimensional marine observation network to provide accurate and reliable marine data for offshore wind power planning, environmental assessment, and disaster prevention [1]

新华社西安5月4日电（记者邹竞一）清晨，晋陕大峡谷笼罩在一片宁静中。在陕西韩城一侧黄河岸边的 悬崖上，一座简朴的两层小楼静静矗立——这里是龙门水文站，又被称为"悬崖上的水文站"。 这是一座特殊的水文站：面向奔流不息的黄河，背靠绝壁万仞的山崖，龙门水文站就像一座"孤岛"，人 员进出只能通过一条悬吊在黄河上空的钢索吊箱。全站11名职工，其中有7名是"95后"。 这也是一座重要的水文站：作为国家重要水文站和黄河重点报汛站，龙门水文站控制着黄河流域49.8万 平方公里的集水面积，为三门峡和小浪底水库调度运用、黄河防汛、水量调度、重大治黄试验研究和国 民经济建设积累了大量水文资料。 五四青年节前夕，记者来到龙门水文站，探访基层水文工作者如何在悬崖与激流间守护黄河安澜。 "机房注意，吊箱准备出发！"龙门水文站负责人李超华穿好救生衣，登上进出水文站的特殊"工具"。脚 下20多米处，黄河水奔涌向前，吊箱在峡谷风的吹拂下微微晃动。 水文站为什么要建在悬崖上？ "相对于生活便利，选址时首先考虑的是水文测验的合理与便利。"李超华扶着护栏解释，龙门水文站自 1934年建站以来曾6次迁址，为了测验数据的准确性，每次都无法避开悬崖。下游 ...