Multi-parameter observations from coastal waters to the deep sea: Focus on quality control and sensor stability

Deep-sea environmental datasets are ever-increasing in size and diversity, as technological advances lead monitoring studies towards long-term, high-frequency data acquisition protocols. This study presents examples of pre-analysis data treatment steps applied to the environmental time series collected by the Internet Operated Deep-sea Crawler “Wally” during a 7-year deployment (2009–2016) in the Barkley Canyon methane hydrates site, off Vancouver Island (BC, Canada). Pressure, temperature, electrical conductivity, flow, turbidity, and chlorophyll data were subjected to different standardizing, normalizing, and de-trending methods on a case-by-case basis, depending on the nature of the treated variable and the range and scale of the values provided by each of the different sensors. The final pressure, temperature, and electrical conductivity (transformed to practical salinity) datasets are ready for use. On the other hand, in the cases of flow, turbidity, and chlorophyll, further in-depth processing, in tandem with data describing the movement and position of the crawler, will be needed in order to filter out all possible effects of the latter. Our work evidences challenges and solutions in multiparametric data acquisition and quality control and ensures that a big step is taken so that the available environmental data meet high quality standards and facilitate the production of reliable scientific results.

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IDENTIFIKASI ABRASI PANTAI PERAIRAN TELUK LASOLO KENDARI SULAWESI TENGGARA

JURNAL GEOLOGI KELAUTAN ◽

10.32693/jgk.7.3.2009.177 ◽

2016 ◽

Vol 7 (3) ◽

Author(s):

Beben Rachmat ◽

Yogi Noviadi

Keyword(s):

Coastal Waters ◽

Deep Sea ◽

Research Area ◽

Wave Activity ◽

Coastal Current ◽

Rip Currents ◽

Sea Floor ◽

South Eastern ◽

Current Wave ◽

Sea Wave

Berdasarkan hasil pengamatan, abrasi pantai yang terjadi di perairan Teluk Lasolo disebabkan oleh aksi gelombang laut yang menjalar dari laut dalam disebelah timur daerah telitian ke arah perairan teluk. Aktifitas gelombang ini menyebabkan terangkutnya sedimen/batuan dari pantai ke arah laut melalui gerakan arus sejajar pantai dan arus tegak lurus pantai. Sedimen yang terangkut akan terbawa terus ke arah laut dalam oleh pergerakan arus laut yang dominan berarah tenggara. Kondisi ini menyebabkan pantai di sekitar perairan Teluk Lasolo mengalami defisit material/sedimen sehingga pantai mengalami abrasi secara kontinyu. Cara yang paling efektif untuk penanganan abrasi pantai di sekitar perairan Teluk Lasolo adalah dengan cara membuat tipe bangunan penahan pantai yang berbentuk groin sejajar dan disesuaikan dengan kondisi hidrooseanografi, morfologi dasar laut dan garis pantainya. Kata kunci : abrasi, pantai, arus, gelombang, sedimen Based on observation result, coastal abration that happened in waters of Teluk Lasolo due to action of sea wave propagating from deep sea in eastside the research area into the waters bay. This wave activity causes transporting of sedimen from coast to the sea by the longshore and rip currents movement. Transported sedimen will be brought to the deep sea by the movement of dominan south-eastern. This condition causes coastal waters around Teluk Lasolo of deficit sedimen will affected the coastal abration in continue. The most effective way to handle coastal abration around territorial waters of Teluk Lasolo is build the breakwater in form of parallel groin and according to the hydrooceanography, morphology of sea floor and coastline conditions. Keyword : abration, coastal, current, wave, sediment

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First record of the silver-cheeked toad fish Lagocephalus scleratus (Gmelin, 1789) (Actinopterygii: Tetraodontidae) from Chennai coastal waters, Southeast India

Journal of Fisheries ◽

10.17017/jfish.v5i1.2017.200 ◽

2017 ◽

Vol 5 (1) ◽

Author(s):

Krishnan Silambarasan ◽

Krishnamurthy Sujatha ◽

Arumugam Sundaramanickam ◽

Elumalai Rajalakshmi ◽

Arokia Doss Anitha Joice

Keyword(s):

Fish Species ◽

Coastal Waters ◽

Deep Sea ◽

First Record ◽

Meristic Characters ◽

By Catch ◽

First Time ◽

Southeast India

The silver-cheeked toad fish, Lagocephalus scleratus, was recorded for the first time on 25 September 2014. Two specimens of this fish species were collected from the by-catch landed by a commercial deep-sea trawler at Kasimedu Fishing Harbour, Chennai coast, Southeast India. The morphometric and meristic characters of the recorded specimens are described and discussed. The specimen was compared with earlier reports.

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Spectral Relations of Hydro-Optical Characteristics in Coastal Waters of the South Coast of Crimea

Ekologicheskaya bezopasnost pribrezhnoy i shel fovoy zon morya ◽

10.22449/2413-5577-2021-2-65-79 ◽

2021 ◽

Author(s):

V. I. Mankovsky ◽

E. V. Mankovskaya ◽

◽

Keyword(s):

Attenuation Coefficient ◽

Coastal Waters ◽

Deep Sea ◽

Secchi Depth ◽

Measurement Data ◽

South Coast ◽

Optical Measurements ◽

The South ◽

Beam Attenuation ◽

Beam Attenuation Coefficient

The article studies interrelations of the beam attenuation coefficient in different spectrum regions and spectral relations of beam attenuation coefficient to the Secchi depth in the coastal waters of the South Coast of Crimea. The data were used of in situ optical measurements obtained in 2008–2014 from a stationary oceanographic platform installed in the coastal waters of the South Coast of Crimea near the village of Katsiveli. According to the measurement data the relation was determined of the beam attenuation coefficient in eight parts of the spectrum in the wavelength range of 416–640 nm to the Secchi depth, which varies from 6 m to 17.5 m. Spectral distributions of the beam attenuation coefficient at different Secchi depths in coastal and deep sea waters were compared. As a result, it is concluded that the relationships between the spectral attenuation coefficient and the Secchi depth in coastal waters are not applicable to deep sea waters. It is shown that the feature of such equations in coastal waters is related to the higher concentration of fine suspended matter in them. Intercorrelation parameters were calculated of beam attenuation coefficients in different spectrum regions in coastal waters. High correlation coefficients make it possible to reconstruct distribution of the attenuation coefficient in a wide spectral range based on measurements at one wavelength in any spectrum region. The optimal spectral region to measure the beam attenuation coefficient is 468–527 nm.

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A record of the trematode and cestode parasites of fishes from the Porcupine Bank, Irish Atlantic Slope and Irish Sea

Parasitology ◽

10.1017/s0031182000024598 ◽

1941 ◽

Vol 33 (4) ◽

pp. 390-396 ◽

Cited By ~ 18

Author(s):

Gwendolen Rees ◽

Jack Llewellyn

Keyword(s):

Coastal Waters ◽

Deep Sea ◽

Irish Sea ◽

The West ◽

The Past ◽

Fresh Material ◽

Junior Author ◽

The Subject ◽

The Irish Sea ◽

West Of Ireland

The trematode and cestode parasites of fishes inhabiting British coastal waters have been the subject of several studies in the past, but the parasites of deep-sea fishes have received comparatively little attention due probably to the difficulty of obtaining fresh material. In order that such material might be obtained, excursions were made by the junior author in a commercial trawler to some of the deep-sea fishing grounds lying to the west of Ireland, namely, the Irish Atlantic Slope and the Porcupine Bank. Two excursions were made, the first in August 1938 and the second in July 1939, each extending over a period of about 12 days. In addition, a study has been made of the parasites of some fishes from the Irish Sea from 1936 to 1939. The results of both surveys are incorporated in this paper, and the areas investigated are indicated in Table 1.

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The Chaetognaths of Western Canadian Coastal Waters

Journal of the Fisheries Research Board of Canada ◽

10.1139/f55-031 ◽

1955 ◽

Vol 12 (4) ◽

pp. 593-617 ◽

Cited By ~ 9

Author(s):

Helen E. Lea

Keyword(s):

Continental Shelf ◽

Coastal Waters ◽

Deep Sea ◽

Open Ocean ◽

Inland Waters ◽

Western Canada ◽

Outer Limit

Four species of chaetognaths were found in samples from 11 representative areas along the coastline of western Canada. Sagitta elegans was the most abundant and widely distributed species, occurring, at least in small numbers, in all the areas sampled. It was characteristic of the mixed coastal waters over the continental shelf and of the inland waters. Eukrohnia hamata, an oceanic form, occurred in most regions in small numbers as an immigrant, and was abundant toward the edge of the continental shelf. Sagitta lyra, strictly a deep sea species, was found only in the open waters along the outer coasts, and a few specimens of Sagitta decipiens, another oceanic form, were also taken in deep hauls from areas exposed to open ocean influence. The outer limit of Sagitta elegans corresponded with the inner limits of all three oceanic forms, though Eukrohnia hamata invaded the inland waters to some extent.

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Seasonal variation in dissolved aluminium concentrations in coastal waters and biological limitation of the export of the riverine input of aluminium to the deep sea

Continental Shelf Research ◽

10.1016/0278-4343(89)90065-4 ◽

1989 ◽

Vol 9 (10) ◽

pp. 919-929 ◽

Cited By ~ 29

Author(s):

D.J. Hydes

Keyword(s):

Seasonal Variation ◽

Coastal Waters ◽

Deep Sea ◽

Riverine Input

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Apprehending novel biodiversity redux – thirteen new genera and three new families of Zealandian Bryozoa, with the first living species of the Eocene‒Miocene genus Vincularia (Vinculariidae)

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315421000266 ◽

2021 ◽

pp. 1-28

Author(s):

Dennis P. Gordon

Keyword(s):

Coastal Waters ◽

Deep Sea ◽

New Combinations ◽

New Genera ◽

Incertae Sedis ◽

Biogeographic Region ◽

Living Species ◽

Recent Species ◽

Torres Strait ◽

Hard Substrata

Abstract Thirteen new genera and three new families of cheilostome Bryozoa are described from the New Zealand biogeographic region, centred on Zealandia, between 26.42° (northern Norfolk Ridge) and 54.02°S latitude (south-east Campbell Plateau) from coastal waters to bathyal depths (46‒1676 m). The new genera, comprising 15 new and one previously described Zealandian species, are: Elementella (Elementellidae n. fam.), Niwapora, Quasicallopora, Quitocallopora, Judyella (Calloporidae), Ellisantropora (Antroporidae), Rhizellisina (Ellisinidae), Radixenia (Calloporoidea incertae sedis), Granomurus (Granomuridae n. fam.), Carolanna (Bugulidae), Borioplebs (Borioplebidae n. fam.), Seabournea (Cribrilinidae) and Waeschenbachia (Romancheinidae). A new Recent species of the otherwise Eocene‒Miocene genus Vincularia is also described from deep water on the Three Kings Ridge. Two new combinations are created – Judyella precocialis (Gordon, 1984) and Ellisantropora aggregata (Gordon, 1984). Ellisantropora tilbrooki sp. nov. is also introduced for a species from Torres Strait. Four of the deep-sea genera (three from one station on the northern Norfolk Ridge, one from a station on the Three Kings Ridge) have species with plesiomorphies or distinctive skeletal characters that suggest they are relict. Almost half of the new species form spot-like colonies on hard substrata.

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Deep-sea Echinoderidae (Kinorhyncha: Cyclorhagida) from the Northwest Pacific

European Journal of Taxonomy ◽

10.5852/ejt.2018.456 ◽

2018 ◽

Cited By ~ 1

Author(s):

Martin V. Sørensen ◽

Melissa Rohal ◽

David Thistle

Keyword(s):

New Species ◽

Coastal Waters ◽

Deep Sea ◽

Great Depth ◽

Northwest Pacific ◽

Depth Range ◽

Continental Rise ◽

Coastal Species ◽

Pacific Species ◽

Shallow Coastal Waters

The bathyal kinorhynch fauna along the Northwest American continental rise is explored, with emphasis on species of Echinoderidae Zelinka, 1894. Seven species of Echinoderes Claparède, 1863 are described as new to science: E. anniae sp. nov., E. dubiosus sp. nov., E. hamiltonorum sp. nov., E. hviidarum sp. nov., E. juliae sp. nov., E. lupherorum sp. nov. and E. yamasakii sp. nov. Three known species, Echinoderes hakaiensis Herranz, Yangel & Leander, 2017, E. cf. unispinosus Yamasaki, Neuhaus & George, 2018 and Fissuroderes higginsi Neuhaus & Blasche, 2006, are reported. The numerous new species indicate that the deep-sea still holds a great, undiscovered diversity of kinorhynchs, and that Echinoderes, as is also the case in more shallow, coastal waters, represents an important component of the deep-sea kinorhynch fauna. The presence of E. hakaiensis in the deep-sea sediments demonstrates that the species may occur at a great depth range, and suggests that depth may play a less important role for the distribution of some kinorhynch species. The finding of the Northeast Atlantic species E. cf. unispinosus and the Southwest Pacific species Fissuroderes higginsi could indicate that kinorhynch species in the deep-sea may cover considerably larger distributional ranges than is assumed for coastal species of Echinoderidae.

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