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14 results for “marine debris”
Data and Models from the study entitled, "Large-area automatic detection of shoreline stranded marine debris using deep learning"
<p>This repository contains data and models used in the study entitled, "Large-area automatic detection of shoreline stranded marine debris using deep learning". This study can be accessed as an open access publication at the following location: https://doi.org/10.1016/j.jag.2023.103515.</p> <p>The data set is comprised of 1,587 images (512 pixels x 512 pixels) which contains 10,703 individual bounding box labels of marine debris objects. The imagery was collected over the State of Hawai'i in 2015 at 2 centimeter resolution (ground spacing distance).</p> <p>The classification scheme consists of 8 labeled classes: unidentified object, processed wood, metal, vessel, net/cloth, buoy, tire, and line fragments.</p>
Marine debris_island
<p>No description provided.</p>
Marine Debris Opportunistically Collected around Palmer Station, 2022-2023
Observations of marine debris in Antarctica have been increasing; however, impacts, distributions, sources, and transport pathways of debris remain poorly understood. These data include the date, location, and a brief description of marine debris found on the islands and in the waters around Palmer Station Antarctica during the 2022-2023 field season. These debris were found during routine seabird surveys on the islands around Palmer Station and during transits to islands on small boats. Debris were recorded when observed but the absence of debris were not recorded.
SBC LTER: Beach: Distribution of terrestrial organic material in intertidal and nearshore marine sediment due to debris flow response efforts
These data describe the distribution and processing of terrestrial organic material observed in the Santa Barbara Channel (Goleta Bay) during the spring of 2018. Specifically, beach, slough, and marine sediments were sampled during and after the debris disposal event that took place between January and February 2018 following the Thomas Fire and the subsequent Montecito Debris Flow. Data are contained in one table, including organic carbon, carbon isotope, lignin phenol, and pyrogenic carbon measurements analyzed from sediment cores collected at different depths and locations in the nearshore region.
MARIDA: Marine Debris Archive
<p>MARIne Debris Archive (MARIDA) is a marine debris-oriented dataset on Sentinel-2 satellite images. It also includes various sea features that co-exist. MARIDA is primarily focused on the weakly supervised pixel-level semantic segmentation task. </p> <p><strong>Citation: </strong>Kikaki K, Kakogeorgiou I, Mikeli P, Raitsos DE, Karantzalos K (2022) MARIDA: A benchmark for Marine Debris detection from Sentinel-2 remote sensing data. PLoS ONE 17(1): e0262247. <a href="https://doi.org/10.1371/journal.pone.0262247">https://doi.org/10.1371/journal.pone.0262247</a></p> <p>For the quick start guide visit <a href="https://marine-debris.github.io">marine-debris.github.io</a></p> <p> </p> <p>The dataset contains:</p> <p>i. 1381 patches (256 x 256) structured by Unique Dates and S2 Tiles. Each patch is provided along with the corresponding masks of pixel-level annotated classes (*_cl) and confidence levels (*_conf). Patches are given in GeoTiff format.</p> <p>ii. Shapefiles data in WGS’84/ UTM projection, with file naming convention following the scheme: s2_dd-mm-yy_ttt, where s2 denotes the S2 sensor, dd denotes the day, mm the month, yy the year and ttt denotes the S2 tile. Shapefiles include the class of each annotation along with the confidence level and the marine debris report description.</p> <p>iii. Train, Validation and Test split for evaluating machine learning algorithms.</p> <p>iv. The assigned multi-labels for each patch (labels_mapping.txt).</p> <p>The mapping between Digital Numbers and Classes is:</p> <blockquote> <p>1: Marine Debris<br> 2: Dense Sargassum<br> 3: Sparse Sargassum<br> 4: Natural Organic Material<br> 5: Ship<br> 6: Clouds<br> 7: Marine Water<br> 8: Sediment-Laden Water<br> 9: Foam<br> 10: Turbid Water<br> 11: Shallow Water<br> 12: Waves<br> 13: Cloud Shadows<br> 14: Wakes<br> 15: Mixed Water</p> </blockquote> <p>The mapping between Digital Numbers and Confidence level is:</p> <blockquote> <p>1: High<br> 2: Moderate<br> 3: Low</p> </blockquote> <p>The mapping between Digital Numbers and marine debris Report existence is:</p> <blockquote> <p>1: Very close<br> 2: Away<br> 3: No</p> </blockquote> <p> </p> <p>The final uncompressed dataset requires 4.38 GB of storage.</p>
MBES M3 KONGSBERG HF MODEL TEST TANK MARINE DEBRIS DATASET
<p>Dataset created in test tank enviroment for data characterization to infer if marine debris could be detected and classified in the water column. Multiple acoustic frequencies were acquired for the multiple objects. Three points of view were considered for each of the three possible ranges that were possible to acquire data without it being completly compromised by the test tank's walls and bottom, as well as reflections in the water surface.</p>
MARINE DEBRIS ACCUMULATION ON THE BEACH OF TASIK RIA LOCAL TOURISM DESTINATION NORTH SULAWESI INDONESIA
<p><strong>Abstract. </strong>Marine debris is a global issue and a hot topic in Indonesia. This study involved collecting and quantifying various types of debris at Tasik Ria Beach. The study area is Tasik Ria Beach, a small local tourist destination in Minahasa and Manado areas, with high biodiversity and an essential source of seagrass providing significant and vital habitat for endangered species. Debris was collected on sandy beach and mud beach areas between May and August 2022. The results indicated that ceramic and glass debris was found in the greatest number followed by plastic and other debris, thin plastic, and hard plastic. The major contributing factor to the debris abundance in Tasik Ria beach was the shoreline and recreational activities which showed that the land-based sources provided major inputs of plastic pollution at the beaches. The Clean Coastal Index (CCI) calculation of Tasik Ria Beach yielded a result of 5.8 at the sandy beach whereas at the mud beach was 0.65. Thus, the sandy beach was classified as moderately clean and the mud beach was classified as very clean. </p>
Supporting data and code for "A new look at the potential role of marine plastic debris as a global vector of toxic benthic algae".
<p>R code and dataset for: Leite I.P., Menegotto A., Lana P.C. & Mafra Jr LL. 2022. A new look at the potential role of marine plastic debris as a global vector of toxic benthic algae. Science of the Total Environment, 838, 156262.</p>
Western sea_marine debris
<p>No description provided.</p>
Data from: Mollusc-shell debris can mitigate the deleterious effects of organic pollution on marine sediments
Organic pollution is widespread in coastal areas and can have profound impacts on the seabed. Coastal sediments play an important role at a global scale in the recycling of organic matter, and this process is influenced by the habitat complexity of the sediments, among other factors. Mollusc shells are produced as a waste product from a range of anthropogenic activities, but we demonstrate that they can be used to increase the habitat complexity of sediments. We studied the effect of mussel-shell debris (shell-hash) on the biogeochemical processes of marine sediments affected by organic pollution, using a mesocosm experiment simulating the bioturbation effects of macrofauna. We found that shell-hash improved the ecological status of organically polluted sediments by reducing the accumulation of sulphide from anaerobic metabolic pathways. Additionally, when shell-hash was present in an organically polluted sediment, there was a decrease in ammonium release to the water column, thus preventing the negative ecological consequences of eutrophication. Synthesis and applications. Our study indicates that shell-hash debris can be used as a potential tool to mitigate the effects of organic enrichment on marine sediments. A density of shell-hash debris of 1900 g m−2 in the sediment can diminish toxic by-products (sulphides and ammonium) derived from the stimulation of anaerobic metabolic pathways by organic pollution, at levels that are biologically relevant. The mitigation effect of shell-hash is more pronounced in sediments where macrofauna is not present.
Baseline Marine Debris Data (2015-2023) - Proposed Chumash Heritage National Marine Sanctuary
<p>This dataset is synthesized coastline marine debris data from three existing sources and primary collected data. It covers the Central California region from Cambria to Naples for the years 2015-2023. This file contains 40 marine debris item type categories, 6 marine debris material type categories (plastic, glass, metal, cloth, paper and wood, mixed), and 7 marine debris source activity categories (personal hygiene, recreation, smoking, eating and drinking, fishing, dumping, and various). This data set is part of the broader research project conducted by students at the Bren School of Environmental Science & Management. See the research project's abstract for more information: </p> <p>California is both a major source of anthropogenic marine debris and an area particularly vulnerable to its damaging impacts. However, little is known about the quantities and impacts of marine debris in the proposed Chumash Heritage National Marine Sanctuary (CHNMS) along the central coast of California. This project, conducted by graduate students through the Bren School of Environmental Science & Management at the University of California, Santa Barbara, creates a baseline assessment of marine debris in the proposed CHNMS. It aims to inform the National Oceanic and Atmospheric Administration (NOAA) Sanctuaries West Coast Regional Office, along with sanctuary management partners and local communities, about local marine debris and potential management measures. Existing community science beach cleanup data and primary collected data were analyzed to understand spatial patterns in quantities and types of marine debris. We found that plastic debris is the most common material type; areas with the greatest debris densities are likely the Morro Bay, Avila Beach, Five Cities, and Gaviota Coast areas. Smoking, eating, and drinking are major activities that contribute to coastal debris in this region. Alongside this quantitative analysis, analyses of policies and interviews with agencies, local organizations, research institutes, and Indigenous communities revealed that current policies may not be effective at reducing marine debris, despite strong concern for marine debris and its impacts on the coastal environment in this region. Based on these findings, we recommend streamlining debris collection protocols with standardized debris categories and effort metrics, implementing innovative policies to reduce marine debris sources, ensuring co-stewardship of the CHNMS to include and prioritize Indigenous perspectives, and conducting additional research on marine and land-based sources of debris. These recommendations will enhance monitoring and mitigation of marine debris in the CHNMS.</p>
Baseline Marine Debris Data (2015-2023) - Proposed Chumash Heritage National Marine Sanctuary
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Data from: Mollusc-shell debris can mitigate the deleterious effects of organic pollution on marine sediments
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Monitoring marine bound debris using UAS on the US-Mexico Border
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