在泛斯瓦尔巴德岛附近的永久土冷层危害清单 (SvalCryo)
Ionut Cristi Nicu1, Lena Rubensdotter2,3, Hakan Tanyaș4
1High North Department, Norwegian Institute for Cultural Heritage Research (NIKU), Fram Centre, N-9296, Tromsø, Norway. ionut.cristi.nicu@niku.no.
Scientific data
|August 17, 2024
概括
新的北极数据揭示了斯瓦尔巴德的融和热侵蚀峡谷. 这份冰层危险清单为监测环境变化和评估气候变暖中的风险提供了基准.
科学领域:
- 地球科学 地球科学 地球科学
- 地质形态学 地质形态学
- 永久土科学 永久土科学
背景情况:
- 冰层的危险,如融化低谷 (TS) 和热侵蚀峡谷 (TEG),是永久土景观的特征.
- 北极地区缺乏关于这些地形过程的全面空间和时间数据,与中低度地区不同.
- 现有的TS和TEG库存仅限于斯瓦尔巴德人口最多的地区.
研究的目的:
- 扩大融化和热侵蚀峡谷的库存到斯瓦尔巴德群岛的大部分地区.
- 为监测应对全球变暖的环境变化提供基线数据集.
- 支持对冰层危险的易感性,危险性和风险评估模型.
主要方法:
- 使用空中照片手动绘制融化沉和热侵蚀峡谷的地图.
- 在斯瓦尔巴德14个主要的无冰区域识别和数字化8491个多边形.
- 将绘制图的特征分为融化低谷 (3679) 和热侵蚀峡谷 (4812).
主要成果:
- 创建了SvalCryo库存,大大扩大了斯瓦尔巴德已知的TS和TEG分布.
- 详细的空间数据为3679个融化沉降和4812个热侵蚀峡谷.
- 涵盖斯瓦尔巴德大部分没有冰的地区的全面数据集.
结论:
- 斯瓦尔克里奥 (SvalCryo) 库存在了解北极的冰层危险方面取得了重要进展.
- 该数据集作为跟踪气候变化对永久土景观影响的重要基准.
- 这项研究有助于未来对北极环境响应,危险评估和风险管理进行地质科学研究.
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