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Structure from motion images collected during follow-up marine debris surveys at coral reef sites at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands from 2021-09-13 to 2021-09-14
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2022
Source: Instrument -
Alternative Title:SfM Debris: images
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Corporate Authors:
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NOAA Program & Office:
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Description:The photographs described in this dataset were collected using a Structure from Motion (SfM) approach during in-water marine debris swim surveys conducted by snorkelers in 2021, at sites where entangled nets were removed in 2018. Surveys were conducted by the NOAA Fisheries, Ecosystem Sciences Division (ESD) at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands (NWHI). The photographs in this collection are from follow-up surveys that occurred from September 13-14, 2021 on a joint mission with non-profit organization Papahanaumokuakea Marine Debris Project aboard the M/V IMUA, to assess reef recovery. Impact images are those taken from sites which were previously entangled with nets, and control images were either relocated or newly established to fulfill the paired study design.
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Content Notes:The Papahānaumokuākea Marine National Monument (PMNM) includes the 1200 nautical mile chain of atolls and islets known as the Northwestern Hawaiian Islands (NWHI) that are geographically positioned as a repository for marine debris. Marine debris circulates within the North Pacific Subtropical Gyre until it encounters the atolls of the NWHI. The Ecosystem Sciences Division (ESD) at NOAA Fisheries has conducted both ship- and shore-based missions in the NWHI to survey for and remove derelict fishing gear and many other types of marine debris. Exploratory and opportunistic efforts began in 1996 that evolved into ~annual cruises. The collected photographs were processed using a structure from motion (SfM) approach to create orthophotos and analyzed in GIS for benthic cover. The purpose of the Structure from Motion (SfM) surveys at Pearl and Hermes Atoll is to understand whether derelict fishing nets significantly alter the benthic community composition of the reef and how these impacts last over time once the net is removed. This study leveraged SfM, an emerging photogrammetry technique, to allow efficient data collection alongside marine debris survey and removal efforts.
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Source:Instrumentcamera
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Dataset Download URL:
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Identifier:gov.noaa.nodc:PIFSC-SfM-Images-MarineDebris-NWHI
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Media Type:image/jpeg
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Is Part Of:Ecosystem Sciences DivisionCoral Reef Ecosystem Program (CREP)
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Dataset:Ecosystem Sciences Division, Pacific Islands Fisheries Science Center (2020). Structure from motion images collected during marine debris surveys at coral reef sites entangled with fishing nets at Pearl and Hermes Atoll in the Northwestern Hawaiian Islands from 2018/09/24 to 2018/10/03. [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/PIFSC-SfM-Images-HI. Accessed [date].
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Context:Digital table - digital representation of facts or figures systematically displayed, especially in columns
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Type:CSVJPEG
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Described By Type:ISO 19115-2 Metadata
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Rights Information:CC0 Public Domain
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Rights Statement:accessLevel: PublicDistribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
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Described By:
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Compliance:Submitted
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