The properties, mechanisms, and hazards of interplate and intraplate earthquakes in India

用一种通俗易懂的方式描述你的研究。这将是公开的，申请人有责任确保内容适合出版。不超过4000个字符，包括空格和回车。地震灾害危及人类生命和关键基础设施，强调需要更深入地了解地震动力学和精确的风险评估，特别是在容易发生罕见、长期复发事件的地区。在全球范围内，地震主要集中在构造板块边界，尽管缺乏关于地震位置和时间的精确信息，但人们认识到，地震风险较高。相反，远离这些边界的板块内区域也会经历重大地震，由于其稀有性而呈现出独特的挑战。值得注意的是，这些地震活跃的板块内区域往往与大型城市中心重合，从而放大了潜在的风险。区分板间地震和板内地震的主要特征包括：(1)驱动滑动的断层应力的变化；(2)地震震级-频率分布——一个地区相对于大地震的小地震数量；(3)指示地震严重程度的震源参数，包括应力降、事件持续时间和地震发生前的前兆阶段。调查这些差异及其背后的原因，以及记录历史地震事件，有助于更全面地了解地震，并为加强区域地震危险性评估提供途径。我们的项目致力于探索地震破裂的基本物理学，并记录印度次大陆内的历史地震，包括公众和国家对这些事件的反应。这些努力是密不可分的，包括通过实验室实验、钻孔应力测量和地震监测相结合，区分板间和板内区域的特征，并更好地记录历史地震活动及其反应。通过仔细研究应力条件、岩石性质、地震震级、震源特征和罕见的历史事件，我们的目标是提高印度关键地区风险分析的精度。将把从这些活动中获得的知识汇集起来，制订一项教育和外联倡议，针对一般民众（通过学校）和地方政府，通过关于地震危险的科学和历史性质的教育和开发改进决策的工具。该项目将提高公众对地震风险的认识，推广直接的救生措施，并制定更好的规划，以准备和应对未来的地震灾害。

Describe the research in simple terms in a way that could be publicised to a general audience. This will be made publicly available, and Applicants are responsible for ensuring that the content is suitable for publication. No more than, 4000 characters including spaces and returns.Seismic hazards endanger both human lives and critical infrastructure, underscoring the need for a more profound understanding of earthquake dynamics and precise risk assessment, especially in regions prone to infrequent, long-recurrence events. Globally, earthquakes predominantly cluster along tectonic plate boundaries, where heightened seismic risk is acknowledged despite the lack of precise information on location and timing of earthquakes. Conversely, intraplate regions, situated away from these boundaries, also experience significant earthquakes, presenting a distinct challenge due to their rarity. Notably, these seismically active intraplate regions often coincide with large urban centres, amplifying potential risks.Key features that distinguish interplate and intraplate earthquakes include (1) variations in the stress on the fault that drives slip; (2) earthquake magnitude-frequency distributions - the number of small earthquakes in a region relative to large earthquakes; and (3) source parameters that dictate the severity of an earthquake, including the stress drop, duration of the event, and precursory phases that occur immediately preceding earthquakes. Investigating these distinctions and the underlying reasons responsible for them, as well as documenting historical earthquake events, holds promise for both a more comprehensive understanding of earthquakes and a pathway to enhanced regional seismic hazard assessment.Our project is dedicated to exploring the fundamental physics of earthquake rupture and documenting historical earthquakes within the Indian subcontinent including the public and state response to these events. These endeavours are inextricably linked and involve distinguishing the characteristic features between interplate and intraplate regions through a combination of laboratory experiments, borehole stress measurements, and seismic monitoring, and developing better records of historical seismicity and the response to it. By scrutinizing stress conditions, rock properties, earthquake magnitudes, source characteristics, and infrequent historical events, we aim to elevate the precision of risk analysis in key regions within India.The knowledge gained from these activities will be brought together to craft an educational and outreach initiative aimed at both the general population (through schools) and local government through education on the scientific and historical nature of earthquake hazard and development of tools to improve decision making. The program will heighten public awareness regarding earthquake risks, promote straightforward life-saving measures, and develop better planning to prepare and deal with future seismic hazard.