When a disaster emerges,timely acquisition of information is crucial for a rapid situation assessment.Although automation in the stan-dard satellite-based emergency mapping workflow has been advanced,delays still occu...When a disaster emerges,timely acquisition of information is crucial for a rapid situation assessment.Although automation in the stan-dard satellite-based emergency mapping workflow has been advanced,delays still occur at crucial steps.In order to speed up the provision of satellite-based crisis products to emergency man-agers,this paper proposes a geo-social media-based approach that detects disaster events based on the spatio-temporal analysis of georeferenced,disaster-related Tweets.The proposed methodol-ogy is validated on the basis of two use cases:wildfires in Chile and British Columbia.The results show the general ability of Twitter to forecast events several days in advance,at least for the Chile use case.However,there are large spatial differences,as there is a correlation between population density and the reliability of Twitter data.Consequently,only few meaningful alerts could be generated for British Columbia,an area with very low population numbers.展开更多
This study provides a comprehensive overview of modern cartography innovations and emerging trends,highlight-ing the importance of geospatial representation in various fields.It discusses recent advancements in geospa...This study provides a comprehensive overview of modern cartography innovations and emerging trends,highlight-ing the importance of geospatial representation in various fields.It discusses recent advancements in geospatial data collection techniques,including satellite and aerial imagery,Light Detection and Ranging(LiDAR)technology,and crowdsourcing.The research also investigates the integration of big data,machine learning,and real-time processing in Geographic Information Systems(GIS),as well as advances in geospatial visualization.In addition,it examines the role of cartography in addressing global challenges such as climate change,disaster management,and urban planning in line with the International Cartographic Association’s(ICA)perspectives.The study discusses the ethical considerations and challenges associated with modern cartography,including privacy,data security,and accessibility issues.Finally,it outlines future directions and opportunities in cartography,focusing on the potential applications of artificial intelligence,interdisciplinary collaborations,and open-source platforms.This discussion aims to emphasize the significance of continued research and development in cartography and encourage interdisciplinary collaboration for a better understanding of the world.展开更多
The digital representation of disaster situations into maps,mainly based on remotely sensed observations,is becoming a widely used instrument for emergency management.Thousands of maps are being produced all over the ...The digital representation of disaster situations into maps,mainly based on remotely sensed observations,is becoming a widely used instrument for emergency management.Thousands of maps are being produced all over the world and big attention is paid by international institutions,such as the World Bank,the United Nations and the European Commission to these tools.The quality of crisis maps is a crucial element to ensure effectiveness in the disaster response chain,but it is often neglected with respect to the need for a rapid delivery.In this paper a sample of crisis maps produced between 2005 and 2010 by world leader providers has been evaluated through around 40 parameters assessed by visual analysis and extracted from the validation protocol designed at the Joint Research Centre(JRC)of the European Commission.The maps turned out to be in most cases clearly readable,but some gaps and inconsistencies have been singled out,due to the lack of international standard references.The results are analysed in detail and some remarks are presented.展开更多
基金funding from the European Commission-European Union under HORIZON EUROPE(HORIZON Research and Innovation Actions)under grant agreement 101093003(HORIZON-CL4-2022-DATA-01-01)。
文摘When a disaster emerges,timely acquisition of information is crucial for a rapid situation assessment.Although automation in the stan-dard satellite-based emergency mapping workflow has been advanced,delays still occur at crucial steps.In order to speed up the provision of satellite-based crisis products to emergency man-agers,this paper proposes a geo-social media-based approach that detects disaster events based on the spatio-temporal analysis of georeferenced,disaster-related Tweets.The proposed methodol-ogy is validated on the basis of two use cases:wildfires in Chile and British Columbia.The results show the general ability of Twitter to forecast events several days in advance,at least for the Chile use case.However,there are large spatial differences,as there is a correlation between population density and the reliability of Twitter data.Consequently,only few meaningful alerts could be generated for British Columbia,an area with very low population numbers.
文摘This study provides a comprehensive overview of modern cartography innovations and emerging trends,highlight-ing the importance of geospatial representation in various fields.It discusses recent advancements in geospatial data collection techniques,including satellite and aerial imagery,Light Detection and Ranging(LiDAR)technology,and crowdsourcing.The research also investigates the integration of big data,machine learning,and real-time processing in Geographic Information Systems(GIS),as well as advances in geospatial visualization.In addition,it examines the role of cartography in addressing global challenges such as climate change,disaster management,and urban planning in line with the International Cartographic Association’s(ICA)perspectives.The study discusses the ethical considerations and challenges associated with modern cartography,including privacy,data security,and accessibility issues.Finally,it outlines future directions and opportunities in cartography,focusing on the potential applications of artificial intelligence,interdisciplinary collaborations,and open-source platforms.This discussion aims to emphasize the significance of continued research and development in cartography and encourage interdisciplinary collaboration for a better understanding of the world.
文摘The digital representation of disaster situations into maps,mainly based on remotely sensed observations,is becoming a widely used instrument for emergency management.Thousands of maps are being produced all over the world and big attention is paid by international institutions,such as the World Bank,the United Nations and the European Commission to these tools.The quality of crisis maps is a crucial element to ensure effectiveness in the disaster response chain,but it is often neglected with respect to the need for a rapid delivery.In this paper a sample of crisis maps produced between 2005 and 2010 by world leader providers has been evaluated through around 40 parameters assessed by visual analysis and extracted from the validation protocol designed at the Joint Research Centre(JRC)of the European Commission.The maps turned out to be in most cases clearly readable,but some gaps and inconsistencies have been singled out,due to the lack of international standard references.The results are analysed in detail and some remarks are presented.
