scholarly journals Preliminary results of integrated oceanographic and geophysical observations in the profile of Peter the Great Bay – Tsushima Strait (the Sea of Japan, October 2019)

2020 ◽  
Author(s):  
А.А. ЛЕГКОДИМОВ ◽  
М.А. БОВСУН ◽  
Д.А. ШВАЛОВ ◽  
Г.И. МИШУКОВА ◽  
М.В. ИВАНОВ ◽  
...  
Keyword(s):  
Sea Of Japan ◽  
Flow System ◽  
Peter The Great Bay ◽  
The Sea Of Japan ◽  
Near Surface ◽  
Atmospheric Air ◽  
Tsushima Strait ◽  
Intensity Measurements ◽  
Peter The Great ◽  
Complex Methods

Наиболее оперативную информацию о состоянии океана дает проведение комплексных исследований (гравиметрические наблюдения, измерения интенсивности флуоресценции, концентрации метана и хлорофилла-а в приповерхностном слое воды, ртути и газов в атмосферном воздухе) непосредственно во время следования судна. Наши исследования проводились на переходе Владивосток–Нячанг в период с 27 по 29 октября 2019 г. в Японском море в рамках рейса LV88 на НИС «Академик М.А. Лаврентьев». Полученные данные отличаются высокой сходимостью с результатами прошлых экспедиций (например, рейс LV84, 2018 г.). Нами выявлены зоны аномальных концентраций метана (8,3 нмоль/л), углекислого газа (2,3 ppm) и ртути (4 нг/м3), а также отмечены гравитационные аномалии в Корейском проливе. The study of the ocean by complex methods using a flow system and atmospheric air is currently one of the universal methods of obtaining express results (such as gravimetric observations, fluorescence intensity measurements, methane and chlorophyll-a concentrations in near-surface water, mercury and various gases in open air) directly during the vessel’s sailing. The studies were conducted on the Vladivostok – Nha Trang traverse during October 27–29, 2019 in the Sea of Japan as a part of the LV88 voyage aboard the R/V “Academic M.A. Lavrent’yev”. According to the results of the study, abnormal zones of concentrations of methane (8.3 nM/l), carbon dioxide (2.3 ppm) and mercury (4 ng/m3) were identified. We have also noted gravitation anomalies in the Korean Strait.

The records of Pagurus trigonocheirus (Stimpson, 1858) (Crustacea: Decapoda: Paguridae) from the continental coasts of the Peter the Great Bay of the Sea of Japan with the list of hermit crab species from the area

Zootaxa ◽  
2020 ◽  
Vol 4869 (2) ◽  
pp. 275-280
Author(s):  
IVAN MARIN
Keyword(s):  
Sea Of Japan ◽  
Hermit Crab ◽  
Peter The Great Bay ◽  
Hermit Crabs ◽  
The Sea Of Japan ◽  
Crab Species ◽  
Exact Sampling ◽  
Peter The Great ◽  
Great Bay

The sublittoral hermit crab Pagurus trigonocheirus (Stimpson, 1858) (Crustacea: Decapoda: Paguridae) is recorded from depths of 80–200 m along the continental coastline of the Peter the Great Bay, Sea of Japan. The exact sampling localities as well as photographs of live specimens are presented in the paper. Doubtful records of hermit crabs from the southern Russian coastline of the Sea of Japan are also discussed. 

Admirandus multicavus and Adoncholaimus ussuriensis sp. n. (Nematoda: Enoplida: Oncholaimidae) from the Sea of Japan

Nematology ◽  
2015 ◽  
Vol 17 (10) ◽  
pp. 1229-1244 ◽  
Author(s):  
Vladimir Mordukhovich ◽  
Dmitry Atopkin ◽  
Natalia Fadeeva ◽  
Victoria Yagodina ◽  
Julia Zograf
Keyword(s):  
Sea Of Japan ◽  
Buccal Cavity ◽  
Mitochondrial Gene ◽  
Large Body ◽  
Peter The Great Bay ◽  
The Sea Of Japan ◽  
Scanning Electron Micrographs ◽  
Peter The Great ◽  
Dichotomous Key ◽  
C Subunit

A description of one new, and redescription of one known, species of the subfamily Adoncholaiminae (Nematoda: Oncholaimidae) from Peter the Great Bay (Sea of Japan) are provided. Adoncholaimus ussuriensis sp. n. is characterised by relatively large body size (L = 4.3-5.8 mm in male, 4.4-6.2 mm in female), a pair of terminal pores of the Demanian system opening dorsally at 147-189 μm (2.3-3.0 abd) anterior to the anus, excretory pore located posterior to buccal cavity region, absence of a ventral swelling on tail, long spicules (190-230 μm), presence of a gubernaculum (32-40 μm), presence of a complicated sensory field in the male with a complex supplementary organ and two sets of pilose filaments (5-10 μm long) on the posterior cloacal lobe and four rows of subventral and subdorsal postcloacal sensilla. We provide a redescription of Admirandus multicavus illustrated by light and scanning electron micrographs and propose Adoncholaimus chinensis as a junior synonym of Admirandus multicavus. The diagnoses of both genera are emended. Partial sequences of the mitochondrial gene cytochrome oxidase c subunit I (COI) and D2-D3 region of the 28S rDNA for both species were obtained. A dichotomous key to Adoncholaimus species is provided.

Algae of Peter the Great Bay of the Sea of Japan as a source of lectins

2007 ◽  
Vol 33 (5) ◽  
pp. 329-332 ◽  
Author(s):  
O. V. Chernikov ◽  
I. V. Chikalovets ◽  
V. I. Molchanova ◽  
M. A. Pavlova ◽  
P. A. Lukyanov
Keyword(s):  
Sea Of Japan ◽  
Peter The Great Bay ◽  
The Sea Of Japan ◽  
Peter The Great ◽  
Great Bay

scholarly journals EXPERIMENTAL STUDIES OF THE DISTRIBUTION OF VARIOUS SPECIES OF SEISMOACOUSTIC WAVES IN THE COASTAL ZONE

2020 ◽  
Author(s):  
А.Н. Самченко ◽  
А.А. Пивоваров ◽  
А.Н. Швырев ◽  
И.О. Ярощук
Keyword(s):  
Surface Waves ◽  
Coastal Zone ◽  
Sea Of Japan ◽  
Peter The Great Bay ◽  
Experimental Studies ◽  
Low Frequency ◽  
Acoustic Signals ◽  
The Sea Of Japan ◽  
Preliminary Results ◽  
Peter The Great

В статье приводятся результаты экспериментальных исследований распространения низкочастотных акустических сигналов (33 Гц) на побережье залива Петра Великого Японского моря. Источник акустических сигналов опускался с борта маломерного судна в воду, а приемные системы были у береговой черты в воде и на суше. За счет использования трехкомпонентных виброметров стало возможно разделить принятые сигналы на различные типы волн (продольные, поперечные и поверхностные). Получены предварительные результаты расчета скоростных характеристик приходов различного типа волн на виброметры. The article presents the results of experimental studies on the propagation of low-frequency acoustic signals (33 Hz) on the coast of Peter the Great Bay of the Sea of Japan. The source of acoustic signals descended from the board of a small boat into the water, and the receiving systems were at the coastline in water and on land. Through the use of three component vibrometers, it has become possible to divide the received signals into various types of waves (longitudinal, transverse and surface waves). The preliminary results of calculating the speed characteristics of the arrival of various types of waves on vibrometers are obtained.

scholarly journals Probabilistic Characteristics of Intensive Short-Period Internal Waves in the Sea of Japan

2020 ◽  
Vol 27 (5) ◽  
Author(s):  
M. V. Kokoulina ◽  
O. E. Kurkina ◽  
E. A. Rouvinskaya ◽  
A. A. Kurkin ◽  
◽  
...  
Keyword(s):  
Internal Waves ◽  
Sea Of Japan ◽  
Peter The Great Bay ◽  
Statistical Characteristics ◽  
The Sea Of Japan ◽  
Peter The Great ◽  
Short Period ◽  
Wave Heights ◽  
Log Normal ◽  
Log Normal Distribution

Purpose. The paper is aimed at studying the regional features of the internal waves’ field in the Sea of Japan (the Peter the Great Bay) based on the field data, namely, determination of the internal waves’ statistical characteristics that can be used to predict possibility of generating the waves of extreme amplitudes. Methods and Results. The records of water temperature variability in the Peter the Great Bay (the depth at the point of measurements is 42 m) obtained for October 11 – 20, 2011 were used as the initial data. Sampling frequency of the records was 1 s that permitted to analyze the shape of the short-period internal waves. The data on the salinity vertical distribution near the measurement point was also used. The law of the power density spectrum decay (as applied to the studied record) is well described by the Garrett – Munk model for the Sea of Japan zone being under consideration. The calculated temporal series of density were applied for obtaining the basic statistical characteristics including the statistical moments. Besides, empirical distribution for such parameters as the wave heights, periods and steepness and the wave slope amplitude was approximated by the log-normal distribution law and analyzed. The expected wave heights were forecasted using the Poisson statistics. Conclusions. It is shown that the probabilistic characteristics of the internal waves are described well by the log-normal distribution. Based on repeatability of the internal waves’ heights, probability of appearance of intensive disturbances is estimated. It is shown that within 10 days, occurrence of a short-period wave with the height not less than 7 m is guaranteed at the observation point at the 42 m depth. Keywords intensive internal waves, in situ data, probabilistic characteristics of extreme waves, shelf, Sea of Japan.

scholarly journals Shallow water sea slugs (Gastropoda: Heterobranchia) from the northwestern coast of the Sea of Japan, north of Peter the Great Bay, Russia

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2774 ◽  
Author(s):  
Anton Chichvarkhin
Keyword(s):  
Shallow Water ◽  
Sea Of Japan ◽  
Peter The Great Bay ◽  
The Sea Of Japan ◽  
Peter The Great ◽  
Great Bay ◽  
Sea Slugs ◽  
Pacific Waters ◽  
Adjacent Part ◽  
Northern Pacific

The coast of northern Primorye region, north of Peter the Great Bay has been sparsely studied in regards to its molluscan fauna, with just a few works reviewing the distribution of local mollusks. This work presents a survey of the shallow water heterobranch sea slugs currently occurring around Kievka Bay to Oprichnik Bay, Russia. Thirty-nine species of sea slugs were found in this study and the new speciesCadlina olgaesp. nov., described herein. Most (24) of the species occurring in the area have widespread ranges in the northern Pacific Ocean. The eight species are endemic for the Sea of Japan and adjacent part of the Sea of Okhotsk. Seven other occur also in northern Atlantic and Arctic waters. Thirteen found species are not known from Peter the Great Bay but known from adjacent northern Pacific waters. The finding of a previously undescribed species emphasizes the need of further surveys, particularly in subtidal and deeper waters, in order to improve the knowledge on this neglected fauna in Primorye.

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