Advancing river monitoring using image-based techniques: challenges and opportunities

Manfreda, Salvatore; Miglino, Domenico; Saddi, Khim Cathleen; Jomaa, Seifeddine; Eltner, Anette; Perks, Matthew; Peña-Haro, Salvador; Bogaard, Thom; van Emmerik, Tim H.M.; Mariani, Stefano; Maddock, Ian; Tauro, Flavia; Grimaldi, Salvatore; Zeng, Yijian; Gonçalves, Gil; Strelnikova, Dariia; Bussettini, Martina; Marchetti, Giulia; Lastoria, Barbara; Su, Zhongbo; Rode, Michael

doi:10.1080/02626667.2024.2333846

Cited by 8 publications

(3 citation statements)

References 180 publications

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“…These have also been shown to be detectable from space (Garaba & Park, 2024). In the field, cameras can be used to continuously monitor plastics in rivers, independent of the hydrological conditions (Manfreda et al, 2024;van Lieshout et al, 2020). Such techniques may offer a safe and reliable alternative for continuous monitoring during extreme events, and rapid ad hoc detection direction after an extreme event.…”

Section: Reducing Plastic Pollution Through Flood Resiliencementioning

confidence: 99%

The impact of floods on plastic pollution

van Emmerik

2024

Glob. Sustain.

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Non-Technical Summary. Plastic harms ecosystem health and human livelihood on land, in rivers, and in the sea. To prevent and reduce plastic pollution, we must know how plastics move through the environment. Extreme events, such as floods, bring large amounts of plastic into rivers around the world. This article summarizes how different flood types (excessive rainfall, high river flow, or floods from the sea) flush or deposit plastic pollution, and how this impacts the environment. Furthermore, this paper also discusses how improved resilience to floods is important to prevent and reduce plastic pollution. Technical Summary. Plastic pollution is ubiquitous in the environment and threatens terrestrial, freshwater, and marine ecosystems. Reducing plastic pollution requires a thorough understanding of its sources, sinks, abundance, and impact. The transport and retention dynamics of plastics are however complex, and assumed to be driven by natural factors, anthropogenic factors, and plastic item characteristics. Current literature shows diverging correlations between river discharge, wind speed, rainfall, and plastic transport. However, floods have been consistently demonstrated to impact plastic transport and dispersal. This paper presents a synthesis of the impact of floods on plastic pollution in the environment. For each specific flood type (fluvial, pluvial, coastal, and flash floods), we identified the driving transport mechanisms from the available literature. This paper introduces the plastic-flood nexus concept, which is the negative feedback loop between floods (mobilizing plastics), and plastic pollution (increasing flood risk through blockages). Moreover, the impact of flood-driven plastic transport was assessed, and it was argued that increasing flood resilience also reduces the impact of floods on plastic pollution. This paper provides a perspective on the importance of floods on global plastic pollution. Increasing flood resilience and breaking the plastic-flood nexus are crucial steps toward reducing environmental plastic pollution. Social Media Summary. Floods have a large impact on plastic pollution transport, which can be reduced through improved flood resilience

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Section: Reducing Plastic Pollution Through Flood Resiliencementioning

confidence: 99%

The impact of floods on plastic pollution

van Emmerik

2024

Glob. Sustain.

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“…Dugdale et al, 2022;Romano et al 2023) and satellite platforms (e.g. Durand et al, 2021 offer valuable supplementary information to ground-based observation in HOs, which can be used for upscaling or downscaling hydrological variables (e.g., McCabe et al, 2017;Manfreda et al, 2018Manfreda et al, , 2024Su et al, 2020). Recently, higher resolution observations of, for example, soil moisture (Burdun et al, 2023;Han et al, 2023), snow depth (Lievens et al, 2021), and irrigation rate (Dari et al, 2023) have become available and can be used together with coarser scale products, such as total water storage from the Gravity Recovery and Climate Experiment (GRACE) mission, or discharge from the Surface Water and Ocean Topography organizations to develop relevant new missions and to disseminate a range of products, including evapotranspiration estimates through the SEN-ET (Guzinski et al, 2019; and OpenET (Melton et al, 2021) initiatives.…”

Section: Building Integrated Observation Platforms To Address the Uphmentioning

confidence: 99%

HESS Opinions: Towards a common vision for the future of hydrological observatories

Nasta,

Blöschl,

Bogena

et al. 2024

Preprint

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Abstract. The Unsolved Problems in Hydrology (UPH) initiative has emphasized the need to establish networks of multi-decadal hydrological observatories to tackle catchment-scale challenges on a global scale. The already existing monitoring infrastructures have provided an enormous amount of hydrometeorological data, which has helped gain detailed insights into the causality of hydrological processes, test scientific theories and hypotheses, and reveal the physical laws governing catchment behavior. Nevertheless, we are still a long way from being able to fully unravel all the mysteries of hydrological processes to solve practical water-related problems. Hydrological monitoring programs have often produced limited outcomes because of the intermittent availability of financial resources and the substantial efforts required to operate observatories and conduct comparative studies to advance previous findings. Recently, some initiatives have emerged aiming at coordinating data acquisition and hypothesis testing to facilitate an efficient cross-site synthesis of findings. To this end, a common vision and practical data management solutions need to be developed. This opinion paper provocatively discusses two end members of possible future hydrological observatory (HO) networks for a given hypothesized community budget: a comprehensive set of moderately instrumented observatories or, alternatively, a small number of highly instrumented super-sites. A network of moderately instrumented, hydrological monitoring sites distributed across the globe would provide broad spatial coverage across the major pedoclimatic regions, help address UPH about the impact of climate and social systems (e.g., land use change and global warming) on water resources, and enhance the potential for knowledge transfer. However, the moderate instrumentation at each site may hamper an in-depth understanding of complex hydrological processes. In contrast, a few extensively instrumented research sites would allow for community-based experiments in an unprecedented manner, thereby providing more fundamental insights into complex, non-linear processes modulated by scale-dependent feedback and multiscale spatio-temporal heterogeneity. Lumping resources has proven to be an effective strategy in other geosciences, e.g. for research vessels in oceanography and drilling programs in geology. On the downside, a few catchments will not be representative of all pedoclimatic regions, necessitating the consideration of generalization issues. A discussion on the relative merits and limitations of these two visions on HOs is presented with the objective of building consensus on the optimal path for the hydrological community to address the UPH in the coming decades. A final synthesis proposes the potential for combining the two end members into a flexible management strategy.

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“…The research products derived from these applications are often made available in open data repositories. Some examples of datasets and codes related to river monitoring and environmental research have been discussed in recently published works [25][26][27] (see also the Supplementary Materials). These repositories serve as valuable resources for the scientific community, allowing researchers to access and utilise the data and codes for further analysis, validation, and the development of new methodologies in the field of river monitoring and environmental research.…”

Section: River Water Quality and Pollutionmentioning

confidence: 99%

The Use of Unmanned Aerial Systems for River Monitoring: A Bibliometric Analysis Covering the Last 25 Years

Pizarro,

Valera-Gran,

Navarrete-Muñoz

et al. 2024

Hydrology

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Cutting-edge technology for fluvial monitoring has revolutionised the field, enabling more comprehensive data collection, analysis, and interpretation. Traditional monitoring methods were limited in their spatial and temporal resolutions, but advancements in remote sensing, unmanned aerial systems (UASs), and other innovative technologies have significantly enhanced the fluvial monitoring capabilities. UASs equipped with advanced sensors enable detailed and precise fluvial monitoring by capturing high-resolution topographic data, generate accurate digital elevation models, and provide imagery of river channels, banks, and riparian zones. These data enable the identification of erosion and deposition patterns, the quantification of sediment transport, the evaluation of habitat quality, and the monitoring of river flows. The latter allows us to understand the dynamics of rivers during various hydrological events, including floods, droughts, and seasonal variations. This manuscript aims to provide an update on the main research themes and topics in the literature on the use of UASs for river monitoring. The latter is achieved through a bibliometric analysis of the publication trends and identifies the field’s key themes and collaborative networks. The bibliometric analysis shows trends in the number of publications, number of citations, top contributing countries, top publishing journals, top contributing institutions, and top authors. A total of 1085 publications on UAS monitoring in rivers are identified, published between 1999 and 2023, showing a steady annual growth rate of 24.44%. Bibliographic records are exported from the Web of Science (WoS) database using a comprehensive set of keywords. The bibliometric analysis of the raw data obtained from the WoS database is performed using the R software. The results highlight important trends and valuable insights related to the use of UASs in river monitoring, particularly in the last decade. The most frequently used author keywords outline the core themes of UASs monitoring research and highlight the interdisciplinary nature and collaborative efforts within the field. “River”, “topography”, “photogrammetry”, and “Structure-from-Motion” are the core themes of UASs monitoring research. These findings can guide future research and promote new interdisciplinary collaborations.

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Advancing river monitoring using image-based techniques: challenges and opportunities

Cited by 8 publications

References 180 publications

The impact of floods on plastic pollution

The impact of floods on plastic pollution

HESS Opinions: Towards a common vision for the future of hydrological observatories

The Use of Unmanned Aerial Systems for River Monitoring: A Bibliometric Analysis Covering the Last 25 Years

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