Since 2002, the Soil and Water Conservation Bureau, which is responsible for the conservation and administrative management of hillside in Taiwan, has been cooperating with Feng Chia University. Together, they have su...Since 2002, the Soil and Water Conservation Bureau, which is responsible for the conservation and administrative management of hillside in Taiwan, has been cooperating with Feng Chia University. Together, they have successfully carried out the establishment and maintenance of 13 fixed debris flow monitoring stations over the island and 2 mobile debris flow monitoring stations. During July 2004, a powerful southwest air current brought by Mindulle Typhoon caused serious flood in central and southern Taiwan. This paper aims to describe the establishment of debris flow monitoring systems in Taiwan and the observation of the debris flow event during Mindulle Typhoon at Aiyuzi River in Shenmu Village, Nantou County by the monitoring station.展开更多
A new wear-graphy technology was developed, which can simultaneously identify the shape and composition of wear debris, for both metals and non-metals. The fundamental principles of the wear-graphy system and its wear...A new wear-graphy technology was developed, which can simultaneously identify the shape and composition of wear debris, for both metals and non-metals. The fundamental principles of the wear-graphy system and its wear-gram system are discussed here. A method was developed to distribute wear debris on a slide uniformly to reduce overlapping of wear debris while smearing. The composition identification ana-lyzes the wear debris using the scanning electron microscope (SEM) energy spectrum, infrared-thermal im-aging and X-ray imaging technology. A wear debris analysis system based on database techniques is demon-strated, and a visible digitized wear-gram is acquired based on the information of wear debris with image collection and processing of the wear debris. The method gives the morphological characteristics of the wear debris, material composition identification of the wear debris, intelligent recognition of the wear debris, and storage and management of wear debris information.展开更多
Ocean-derived plastic pollution represents a tangible Anthropocene imprint on coastal systems,where natural transport processes and intensified human activities converge.This study examines the composition,functional ...Ocean-derived plastic pollution represents a tangible Anthropocene imprint on coastal systems,where natural transport processes and intensified human activities converge.This study examines the composition,functional origin,and spatial patterns of marine litter along eight remote beaches on the central Caribbean coast of Colombia,an ecologically sensitive region influenced by regional fishing fleets,international shipping lanes,and complex hydrodynamic regimes.Using the OSPAR classification system and the newly developed Ocean-Derived Litter Pressure Index(ODLPI),we quantify typological diversity,litter intensity,and functional categories of offshore-sourced debris.Plastics dominate(>90%)the collected litter,with over 85% linked to fisheries,particularly Abandoned,Lost,or Discarded Fishing Gear(ALDFG)and operational containers.Multivariate analyses reveal spatial heterogeneity shaped by ocean currents,wave exposure,and proximity to fishing activity,with hotspots such as Isla Arena reflecting convergence-driven long-range drift.These patterns demonstrate the role of coastal processes in mediating the stranding of human-derived materials and underscore the diagnostic value of remote beaches as passive accumulation zones.Governance gaps are evident,including weak enforcement of MARPOL Annex V and insufficient port reception infrastructure.The disproportionate exposure of remote and underserved communities,despite minimal contributions to sea-based emissions,highlights urgent equity and environmental justice considerations.We propose process-informed,typology-based monitoring indicators and recommend integrating remote beaches as sentinel sites into national,regional,and global marine litter frameworks.By linking geomorphological and oceanographic processes with socio-environmental governance,this research advances multidisciplinary approaches to coastal sustainability,contributes to SDGs 11,13,14,15,and 17,and strengthens the science-policy interface needed to reduce sea-based plastic pollution in tropical and under-monitored coastal regions worldwide.展开更多
基金Taiwan Soil and Water Conservation Bureau (SWCB- 95-164)
文摘Since 2002, the Soil and Water Conservation Bureau, which is responsible for the conservation and administrative management of hillside in Taiwan, has been cooperating with Feng Chia University. Together, they have successfully carried out the establishment and maintenance of 13 fixed debris flow monitoring stations over the island and 2 mobile debris flow monitoring stations. During July 2004, a powerful southwest air current brought by Mindulle Typhoon caused serious flood in central and southern Taiwan. This paper aims to describe the establishment of debris flow monitoring systems in Taiwan and the observation of the debris flow event during Mindulle Typhoon at Aiyuzi River in Shenmu Village, Nantou County by the monitoring station.
基金Supported by the National Natural Science Foundation of China (No. 5017069)
文摘A new wear-graphy technology was developed, which can simultaneously identify the shape and composition of wear debris, for both metals and non-metals. The fundamental principles of the wear-graphy system and its wear-gram system are discussed here. A method was developed to distribute wear debris on a slide uniformly to reduce overlapping of wear debris while smearing. The composition identification ana-lyzes the wear debris using the scanning electron microscope (SEM) energy spectrum, infrared-thermal im-aging and X-ray imaging technology. A wear debris analysis system based on database techniques is demon-strated, and a visible digitized wear-gram is acquired based on the information of wear debris with image collection and processing of the wear debris. The method gives the morphological characteristics of the wear debris, material composition identification of the wear debris, intelligent recognition of the wear debris, and storage and management of wear debris information.
文摘Ocean-derived plastic pollution represents a tangible Anthropocene imprint on coastal systems,where natural transport processes and intensified human activities converge.This study examines the composition,functional origin,and spatial patterns of marine litter along eight remote beaches on the central Caribbean coast of Colombia,an ecologically sensitive region influenced by regional fishing fleets,international shipping lanes,and complex hydrodynamic regimes.Using the OSPAR classification system and the newly developed Ocean-Derived Litter Pressure Index(ODLPI),we quantify typological diversity,litter intensity,and functional categories of offshore-sourced debris.Plastics dominate(>90%)the collected litter,with over 85% linked to fisheries,particularly Abandoned,Lost,or Discarded Fishing Gear(ALDFG)and operational containers.Multivariate analyses reveal spatial heterogeneity shaped by ocean currents,wave exposure,and proximity to fishing activity,with hotspots such as Isla Arena reflecting convergence-driven long-range drift.These patterns demonstrate the role of coastal processes in mediating the stranding of human-derived materials and underscore the diagnostic value of remote beaches as passive accumulation zones.Governance gaps are evident,including weak enforcement of MARPOL Annex V and insufficient port reception infrastructure.The disproportionate exposure of remote and underserved communities,despite minimal contributions to sea-based emissions,highlights urgent equity and environmental justice considerations.We propose process-informed,typology-based monitoring indicators and recommend integrating remote beaches as sentinel sites into national,regional,and global marine litter frameworks.By linking geomorphological and oceanographic processes with socio-environmental governance,this research advances multidisciplinary approaches to coastal sustainability,contributes to SDGs 11,13,14,15,and 17,and strengthens the science-policy interface needed to reduce sea-based plastic pollution in tropical and under-monitored coastal regions worldwide.
