Epimegabenthos based on seafloor georeferenced mosaics of the Hornsundbanken methane seep area

Событие
Последняя версия опубликовано The University Centre in Svalbard мая 12, 2026 The University Centre in Svalbard
Дата публикации:
12 мая 2026 г.
Опубликовано:
The University Centre in Svalbard
Лицензия:
CC-BY 4.0

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Описание

This dataset consists of all the epimegabenthic fauna marked and enumerated from two seafloor georeferenced image mosaics from the shelf off Svalbard's Hornsund fjord (Hornsundbanken). Videos of the seafloor were obtained with the the remotely operated vehicle (ROV) Ægir from the research vessel Kronprins Haakon, maintaining an altitude of between 1 and 1.5 m. Images were extracted every 3 seconds via the free software ffmpeg and using the images and their associated navigation data, georeferenced mosaics were generated with Agisoft's Metashape software. The two mosaics cover areas of 282 m2 and 164 m2 (446 m2 combined). The mosaics were inputted into Arc Desktop and using the Editor tool, all fauna were identified, marked and enumerated. All individuals were marked to obtain numbers for each taxon. Colonial or encrusting animals were outlined to obtain areal coverage. Identifications were made to the lowest possible level which was species in many cases, but only phylum in some cases. The faunal data from these mosaics were used in the publication by Sen et al. Fauna of shallow water Arctic seep not driven by water masses currently under review.

Записи данных

Данные этого находка ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 68 записей.

Данный экземпляр IPT архивирует данные и таким образом служит хранилищем данных. Данные и метаданные ресурсов доступны для скачивания в разделе Загрузки. В таблице версий перечислены другие версии ресурса, которые были доступны публично, что позволяет отслеживать изменения, внесенные в ресурс с течением времени.

Версии

В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.

Как оформить ссылку

Исследователи должны дать ссылку на эту работу следующим образом:

Sen A, Caudan C, Rodés N, Hong W L, ten Hietbrink S, Szymczycha B, Diak M, Broms F, Knies J (2026). Epimegabenthos based on seafloor georeferenced mosaics of the Hornsundbanken methane seep area. Version 1.1. The University Centre in Svalbard. Occurrence dataset. https://ipt.gbif.no/resource?r=epimegabenthos_hornsundbanken_seep&v=1.1

Права

Исследователи должны соблюдать следующие права:

Публикующей организацией и владельцем прав на данную работу является The University Centre in Svalbard. Эта работа находится под лицензией Creative Commons Attribution (CC-BY 4.0).

Регистрация в GBIF

Этот ресурс был зарегистрирован в GBIF, ему был присвоен следующий UUID: 11cd1b4f-0d2e-418b-8b22-5e00f2308187.  The University Centre in Svalbard отвечает за публикацию этого ресурса, и зарегистрирован в GBIF как издатель данных при оподдержке GBIF Norway.

Ключевые слова

Occurrence

Контакты

Arunima Sen
  • Author
  • Associate Professor
The University Centre in Svalbard (UNIS)
Longyearbyen
NO
Corentin Caudan
  • Originator
  • student
Sorbonne University
Nil Rodés
  • Originator
  • engineer
The University Centre in Svalbard (UNIS)
Wei Li Hong
  • Originator
  • Associate Professor
Stockholm University
Sophie ten Hietbrink
  • Originator
  • student
Stockholm University
Beata Szymczycha
  • Originator
  • Associate Professor
Institute of Oceanology Polish Academy of Sciences (IOPAN)
Magdalena Diak
  • Originator
  • Researcher
Institute of Oceanology Polish Academy of Sciences (IOPAN)
Fredrik Broms
  • Originator
  • Researcher
North Norwegian Humpback Whale Catalogue (NNHWC)
Jochen Knies
  • Originator
  • Researcher
Norwegian Geological Survey (NGU), iC3: Centre for ice, Cryosphere, Carbon and Climate
Arunima Sen
  • Author
  • Associate Professor
The University Centre in Svalbard (UNIS)
Longyear
NO

Географический охват

Continental shelf off the Hornsund fjord of Svalbard, known as Hornsundbanken

Ограничивающие координаты Юг Запад [76,791, 14,159], Север Восток [76,793, 14,168]

Таксономический охват

N/A

Phylum Chordata, Mollusca, Arthropoda, Porifera, Nemertea, Cnidaria, Annelida, Echinodermata

Временной охват

Дата начала 2023-03-06

Данные проекта

Epimegabenthic fauna marked in a GIS (Geographic Information System) from two georeferenced mosaics constructed from still images obtained from ROV (remotely operated vechicle) video.

Название Epimegabenthos based on seafloor georeferenced mosaics of the Hornsundbanken methane seep area
Финансирование Arctic SGD (Submarine groundwater discharge) project (The Norwegian Financial Mechanism 2014-2021, project number 019/34/H/ ST10/00645 and 2019/34/H/ST10/00504).

Исполнители проекта:

Arunima Sen
  • Author

Методы сбора

Numerous gas flares (gas bubbles escaping from the seafloor) have been detected acoustically on the shelf off the Hornsund fjord of Svalbard (known as Hornsundbanken). Using the remotely operated vehicle (ROV) Ægir from the research vessel Kronprins Haakon, video of the seafloor was recorded, maintaining an altitude of about 1-1.5 m. The HD video camera of the ROV was facing directly downwards (perpendicular to the seafloor) for the imaging process. Video acquisition was performed in a lawn-mower pattern, ensuring at least 25% overlap between adjacent lines. Images were extracted from the video every 2 seconds using the free software, ffmpeg. Navigation coordinates for each image were obtained from the ROV's track. These images were stitched together to create a single, composite georeferenced image (mosaic) of the seafloor. For this, structure-from-motion photogrammetry processing was conducted using Agisoft Metashape (version 2.0.2, build number 16334). Two digital models were constructed, covering a total area of 446 m². The georeferenced mosaics were imported into ArcMap Desktop version 10.8.2 and all visible fauna were marked with the Editor tool. Individual organisms were marked as points (point feature class). Colonial or encrusting organisms were outlined to get areal coverages (polygon feature classes). Identification was done to lowest taxonomic level as possible, which was species in some cases, but often reliable identification was limited to higher levels such as genus or family and in certain cases, only phylum level.

Охват исследования Two locations within an area of active methane seepage on the seafloor on the continental shelf off the Hornsund fjord of Svalbard (Hornsundbanken).

Описание этапа методики:

  1. Video imaging of the seafloor was conducted via the downward facing HD camera on the ROV. Overlap was maintained between adjacent video lines. Images were extracted from the video every three seconds and in combination with the corresponding navigation data for the images, a single, composite, georeferenced image (mosaic) was created via Agisoft's Metashape software. Two mosaics were generated. The mosaics were inputted into ArcMap Desktop and all visible features and fauna were marked and enumerated.