由于这种变化通常发生在强烈地震中，研究人员推断相关地区至少有4处地质断层在过去15700年间发生 5次较强地震，其中3次震级超过7级。研究人员在分析这些地质断层后，认为当地的地震风险为低度到 中度，但也有发生强烈地震的可能。 研究人员表示，这是在全球率先用医学CT技术帮助分析地震活动，该方法也适用于其他地区，这为评 估地震风险提供了新工具。（完） 新华社惠灵顿2月27日电（记者龙雷 李惠子）新西兰一项新研究显示，可以用医学领域的计算机断层 扫描（CT）技术分析古代沉积物岩芯，从而帮助揭示地震活动历史和评估地震风险。 新西兰怀卡托大学等机构研究人员近日在美国学术期刊《科学进展》发表论文说，他们利用医学CT设 备对采自新西兰北部哈密尔顿盆地18个古湖泊的161个沉积物岩芯进行扫描，成功识别出火山灰层发生 液化变形的迹象。 ...

地球地质历史上最低海洋温度——约7亿年前的"雪球地球"冰期时海洋有多冷？中国科学家领衔的 国际合作研究首次发现，当时局部海洋温度可低至约-15℃，同时盐度远超现代海水。 在本项研究中，研究团队通过分析远古"铁建造"中的铁同位素，破解了这一难题。作为现代钢铁冶 炼的主要矿石，"铁建造"是一类由富铁层和富硅层交替组成的古老沉积岩。他们发现，约7亿年前的"雪 球"时期的"铁建造"的铁同位素值比地质历史上的任何时期都"系统性偏正"，指示极低温环境。 基于温度与同位素分馏的关系，研究团队推算出"雪球地球"期间"铁建造"形成环境的温度约 为-15±7℃，这一温度比现代最寒冷的深海还要低近20℃。如此低温下海水为何未完全结冰？他们进一 步通过研究证实，当时海洋局部水体盐度极高，足以使冰点降至约-11℃，这也与温度推算结果相互印 证。 研究团队认为，这种极端环境可能形成于巨大冰架底部，类比现代南极的"冰泵"循环，冰架融冻过 程可排出盐分，在底层形成低温、高盐卤水区。 "雪球地球"时期冰架底部高盐度卤水池的形成及其中的铁氧化沉淀过程。中国科学院地质与地球物理研 究所 供图 这项突破性研究成果，首次为"雪球地球"极寒海洋环境提供 ...

Core Viewpoint - The China Geological Survey's Qingdao Marine Geological Research Institute has been awarded the second prize in the Shandong Provincial Natural Resources Science and Technology Progress Award for its achievement in "Key Technologies and Applications for the Full Lifecycle Management of Marine Geological Big Data" [1] Group 1: Achievement Overview - The achievement addresses issues such as low aggregation efficiency, poor standardization, management difficulties, and insufficient data mining of heterogeneous marine geological data [1] - A comprehensive solution from technology to product has been proposed, including the development of marine geological survey data collection and aggregation technology [1] Group 2: Technical Innovations - A collaborative software system has been constructed to facilitate marine geological surveys, covering the entire chain from field data collection to service [1] - A stable and flexible marine geological data model has been developed, along with the establishment of technical standards for the "Marine Geological Database Content and Structure," filling a gap in China's marine geological data standard system [1] Group 3: Data Management and Services - A hybrid management technology combining "relational + big data" for marine geological spatiotemporal data has been researched, leading to the establishment of a national-level authoritative marine geological professional database [1] - The project has enabled socialized public services for marine geological data, including the prediction of marine oil and gas resources, intelligent extraction and classification of marine bottom sediments, and the construction of marine geological virtual reality methods [1] Group 4: Award Significance - The Shandong Provincial Natural Resources Science and Technology Award is held annually to encourage the creativity and initiative of scientific personnel in the natural resources system, promoting technological innovation in the field [1] - This year, a total of 19 first prizes, 55 second prizes, and 75 third prizes were awarded [1]

Core Viewpoint - A research team has confirmed the age of dinosaur egg fossils found in the Qinba Mountains of Hubei Province, dating them to approximately 86 million years ago, providing significant insights into the climatic conditions during that period [1]. Group 1: Research Findings - The research utilized carbonate dating technology for the first time in the study of Cretaceous dinosaur eggs, determining the age of the biogenic calcite within the egg shells to be between 87.65 million and 84.17 million years ago [1]. - The findings indicate that the dinosaur egg-laying events occurred during a global cooling period that began around 93 million years ago, marking a significant climatic transition [1]. Group 2: Historical Context - Dinosaur egg fossils were first discovered in the Qinglong Mountain area in the 1990s, leading to the establishment of a national nature reserve in 2001, which currently protects over 3,000 dinosaur egg fossils [1]. - Despite the discoveries, the specific age of these dinosaur eggs had remained a mystery until this recent research [1]. Group 3: Future Research Implications - The current study does not cover all layers of the buried dinosaur egg fossils, indicating that further research is needed to fully reconstruct the egg-laying events and establish a timeline for the evolution of dinosaur egg morphology in the region [3]. - This research provides a new approach for determining the burial times of different dinosaur egg fossils globally and offers theoretical tools for exploring ancient climate changes and the mysteries of dinosaur evolution and extinction [3].

Core Viewpoint - The article emphasizes the increasing role of technological innovation in transforming ecological advantages into economic benefits, addressing challenges in measuring, trading, and monetizing ecological products through advanced technologies like satellite remote sensing, artificial intelligence, and blockchain [1][2][19]. Group 1: Technological Innovation in Ecological Value - Technological innovation provides effective tools for precise quantification of ecological value, enabling dynamic assessment and quantification of ecosystem services [1][2][19]. - New technologies allow for the conversion of forest carbon sequestration capabilities into tradable carbon reduction credits, facilitating digital rights confirmation and value transformation of ecological resources [1][2][19]. - Digital platforms have been developed to calculate Gross Ecosystem Product (GEP) efficiently, significantly enhancing the recognition of ecological value [1][2][19]. Group 2: Market Mechanisms and Trading Platforms - Technology plays a crucial role in reshaping the trading model of ecological products, with the integration of blockchain and IoT enhancing transaction efficiency [1][2][19]. - Emerging platforms like "Two Mountains Cloud Trading" and "Forestry Carbon Supermarket" have improved the matching of supply and demand for ecological products while reducing transaction costs and ensuring traceability throughout the process [1][2][19]. Group 3: Dual Enhancement of Ecological Products - Technological advancements have effectively driven both the quantity and quality improvements of ecological products, addressing challenges in ecological restoration and promoting continuous environmental improvement [2][20]. - The application of new technologies aids in upgrading traditional green industries, leading to increased production and income, as well as extending product chains through deep processing [2][20]. Group 4: Future Directions for Technological Innovation - There is a need to accelerate breakthroughs in core technologies to solidify the technical foundation for quantifying and transforming ecological value [2][20]. - Innovations in market mechanisms and the establishment of intelligent trading platforms are essential for creating a more efficient digital trading environment [2][20]. - Strengthening interdisciplinary talent cultivation and enhancing public awareness of ecological product value are critical for fostering a green consumption mindset [3][21]. Group 5: International Cooperation and Standards - Deepening international cooperation and actively participating in the formulation of relevant international standards are necessary for advancing global ecological governance systems [4][21]. - The article advocates for leveraging technological innovation as a driving force to continuously unlock the potential of ecological product value, contributing to global green development [5][21].

Core Insights - The seminar focused on "coastal zone earth observation and disaster reduction technology cooperation" between China and ASEAN countries, highlighting the importance of collaboration in addressing climate change and natural disasters [1][2] Group 1: Event Overview - The seminar was held in Nanning, Guangxi, organized by the Qingdao Institute of Marine Geology under the China Geological Survey, with nearly 100 participants from China and ASEAN countries [1] - Key topics included the application of earth observation technology in forecasting, disaster reduction, and ecological protection, showcasing innovative research and practical solutions [1] Group 2: Collaboration and Future Prospects - Experts discussed enhancing cooperation in coastal zone earth observation and disaster reduction, emphasizing international collaboration, data sharing, and joint technology development as essential for improving regional disaster response capabilities [2] - The meeting facilitated bilateral cooperation intentions among China, Cambodia, Myanmar, and Thailand, laying a foundation for deeper collaboration in the field [2] - The event served as a sub-forum for the 2025 China (Guangxi) - ASEAN Mining Cooperation Conference, contributing positively to regional development and sustainable practices [2]