As climate change continues, wildfire outbreaks are becoming more frequent and more difficult to control. In mid-July 2017, a forest fire spread from the forests to the city of Split in Croatia. This unpredictable spread nearly caused emergency systems to collapse. Fortunately, a major tragedy was avoided due to the composure of the responsible services and the help of citizens. Citizens helped to extinguish the fire and provided a large amount of disaster-related information on various social media platforms in a timely manner. In this paper, we addressed the problem of identifying useful Volunteered Geographic Information (VGI) and georeferenced social media crowdsourcing data to improve situational awareness during the forest fire in the city of Split. In addition, social media data were combined with other external data sources (e.g., Sentinel-2 satellite imagery) and authoritative data to establish geographic relationships between wildfire phenomena and social media messages. This article highlights the importance of using georeferenced social media data and provides a different perspective for disaster management by filling gaps in authoritative data. Analyses from the presented reconstruction of events from multiple sources impact a better understanding of these types of events, knowledge sharing, and insights into crowdsourcing processes that can be incorporated into disaster management.

中文翻译：

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众包和社交媒体在危机制图中的作用：以一场野火袭击克罗地亚斯普利特市为例

随着气候变化的继续，野火爆发变得越来越频繁，也越来越难以控制。2017年7月中旬，一场森林大火从森林蔓延到克罗地亚的斯普利特市。这种不可预测的传播几乎导致应急系统崩溃。幸运的是，由于负责任的服务和市民的帮助，避免了重大悲剧。市民帮助扑灭了大火，并在各种社交媒体平台上及时提供了大量与灾难有关的信息。在本文中，我们解决了识别有用的志愿者地理信息（VGI）和地理参考的社交媒体众包数据的问题，以提高在斯普利特市森林火灾期间的态势感知。此外，社交媒体数据与其他外部数据源（例如，Sentinel-2卫星图像）和权威数据以建立野火现象与社交媒体消息之间的地理关系。本文强调了使用地理参考社交媒体数据的重要性，并通过填补权威数据中的空白为灾难管理提供了不同的视角。提出的从多个来源进行的事件重构的分析影响了对此类事件，知识共享以及对可以整合到灾难管理中的众包流程的见解的更好理解。本文强调了使用地理参考社交媒体数据的重要性，并通过填补权威数据中的空白为灾难管理提供了不同的视角。提出的从多个来源进行的事件重构的分析影响了对此类事件，知识共享以及对可以整合到灾难管理中的众包流程的见解的更好理解。本文强调了使用地理参考社交媒体数据的重要性，并通过填补权威数据中的空白为灾难管理提供了不同的视角。提出的从多个来源进行的事件重构的分析影响了对此类事件，知识共享以及对可以整合到灾难管理中的众包流程的见解的更好理解。