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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Ocean and Polar Research
Journal Basic Information
Journal DOI :
Korea Institute of Ocean Science & Technology
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Volume & Issues
Volume 36, Issue 4 - Dec 2014
Volume 36, Issue 3 - Sep 2014
Volume 36, Issue 2 - Jun 2014
Volume 36, Issue 1 - Mar 2014
Selecting the target year
A Study on Meiofauna Community in the Subtidal Sediment outside of the Saemangeum Seadike in the West Coast of Korea
Kim, Kwang-Soo ; Lee, Seunghan ; Hong, Jung-Ho ; Lee, Wonchoel ; Park, Eun-Ok ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 209~223
DOI : 10.4217/OPR.2014.36.3.209
The community structure of benthic meiofauna was investigated from seasonal surveys at seventeen stations off the Saemangeum area, in 2007. Ten meiofaunal taxa were identified. Nematodes were the dominant faunal group in all seasons and harpacticoids were dominant only at a few stations. The mean density of meiofauna was 383 indiv.
, highest in May and November (434 indiv.
), lowest in February (284 indiv.
). Meiofaunal mean biomass was
, highest in November (
), lowest in February (
). Cluster analysis revealed that the study area was composed of three benthic meiofaunal communities. There were significant correlations between major meiofaunal groups and sediment composition and the concentrations of heavy metals. The abundance of harpacticoids are positively correlated with silt (0.559, p < 0.01) and clay (0.340, p < 0.01), and negatively correlated with sand (-0.548, p < 0.01). Harpacticoids also showed positive correlations with heavy metals. The community structure of meiofauna in the study area varied seasonally in response to the change of sediment composition.
Transoceanic Propagation of 2011 East Japan Earthquake Tsunami
Choi, Byung Ho ; Kim, Kyeong Ok ; Min, Byung Il ; Pelinovsky, Efim ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 225~234
DOI : 10.4217/OPR.2014.36.3.225
The 2011 Tohoku earthquake triggered extremely destructive tsunami waves which propagated over the Pacific Ocean, Atlantic Ocean through Drake Passage and Indian Ocean respectively. A total of 10 tide-gauge records collected from the UNESCO/IOC site were analyzed through a band-pass digital filtering device to examine the observed tsunami characteristics. The ray tracing method and finite-difference model with GEBCO 30 arc second bathymetry were also applied to compare the travel times of the Tohoku-originated tsunami, particularly at Rodrigues in the Indian Ocean and King Edward Point in the Atlantic Ocean with observation-based estimates. At both locations the finite-difference model produced the shortest arrival times, while the ray method produced the longest arrival times. Values of the travel time difference however appear to be within tolerable ranges, considering the propagation distance of the tsunami waves. The observed tsunami at Rodrigues, Mauritius in the west of the Madagascar was found to take a clockwise travel path around Australia and New Zealand, while the observed tsunami at King Edward Point in the southern Atlantic Ocean was found to traverse the Pacific Ocean and then passed into the Atlantic Ocean through the Drake Strait. The formation of icebergs captured by satellite images in Sulzberger in the Antarctica also supports the long-range propagation of the Tohoku-originated tsunami.
First Finding of the Mud Shrimp Upogebia yokoyai Makarov, 1938 (Crustacea: Decapoda: Upogebiidae) in Korean Waters
Hong, Jae-Sang ; Lee, Chae-Lin ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 235~246
DOI : 10.4217/OPR.2014.36.3.235
The thalassinidean upogebiid Upogebia yokoyai Makarov, 1938 was first collected and described based on the specimens from the upper tidal flat of sandy shores of Jeju Island, Korea. Although this species was already reported in Japan and Russia, this is the first report of its occurrence in Korea. Upogebia yokoyai differs clearly from other upogebiid species previously recorded in Korean waters, U. major and U. issaeffi, by spinulation of the dactylus and propodus of pereiopod 1. In addition, some morphological comparisons are provided for identification of the three Upogebia species in Korean waters.
Isolation and Antioxidant Activity of Methyl Aconitates from Arctic Red Alga Polysiphonia stricta
Lee, Jung Im ; Kong, Chang-Suk ; Baek, Seung Oh ; Seo, Youngwan ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 247~254
DOI : 10.4217/OPR.2014.36.3.247
In our continuing study on the antioxidant activity of Polysiphonia stricta, its crude extract was fractionated into n-hexane, 85% aqueous methanol (85% aq.MeOH), n-butanol (n-BuOH), and water fractions according to solvent polarity. The solvent fractions were evaluated for their potential to inhibit lipid peroxidation and reactive oxygen species (ROS) production in HT 1080 cells. The n-BuOH fraction most strongly inhibited both lipid peroxidation and ROS production in HT 1080 cells. The n-BuOH fraction was further separated by repeated silica gel column chromatography and RP-HPLC to give methyl aconitates (2 and 3). The chemical structure of isolated compounds was determinated by NMR spectral analysis.
Study on the Dispute for the Dominium of Diàoyútái(Senkaku Islands) and Legal Principles between the Countries Concerned
Yang, Hee Cheol ; Kim, Jin Wook ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 255~276
DOI : 10.4217/OPR.2014.36.3.255
The dispute between China and Japan regarding
is believed to be quite similar to the controversy surrounding Dokdo in terms of historical and post-war processes except for the point that the phenomena of occupation is different with regard to Dokdo. China`s claim to
is based on historical title and continuous use while the basis of Japan`s claim is summarized as preoccupancy of ownerless land. Even though Japan acknowledges that China discovered
, Japan claims that the act to establish sovereignty over the island from the standpoint of International Law was not taken by China. However, at that time, effective occupation was not an essential prerequisite for the acquisition of a territory. That is to say, from a legal perspective, the legal right for an area could be established based on the discovery of the land, and so it is thought that Japan is applying the current criteria of International Law in a manner that is inappropriate. When we review the post-war process, the San Francisco Peace Treaty does not directly mention
. But based on the said treaty, we can note that Japan gave up all rights for the southern area that is north of the boundary line that equates to latitude
and that includes the Ryuku Islands and
. Of course, the provisions for the territory in the San Francisco Peace Treaty and its disposal are not the final factor for the judgment regarding dominium of
. However, it seems clear that Japan`s attitude and interpretation regarding the issues of
, the Kuril Islands and Dokdo is problematic.
Measuring the Scientific Benefits from the Deep-sea Human-operated Vehicle Project: A Choice Experiment Study
Jin, Se-Jun ; Lim, Seul-Ye ; Park, Se-Hun ; Yoo, Seung-Hoon ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 277~288
DOI : 10.4217/OPR.2014.36.3.277
The Korean government is considering the implementation of a project to develop a deep-sea human-operated vehicle (HOV) to improve the level of deep-sea research. Information on the scientific benefits from the project is urgently needed in order to come to a decision about whether to implement the project. This paper measures the conservation value of developing nine attributes associated with HOV by using the choice experiment (CE). A survey of about 356 experts was undertaken and 132 experts completely responded to the survey. To deal with the CE data from the survey, we employed a multinomial logit model. All the coefficient estimates are statistically significant and consistent with prior expectations. Therefore, we can judge that the respondents` works required in the CE survey were within their cognitive abilities and they reported responsible and significant values. Each marginal willingness to pay for each attribute associated with the HOV is statistically significant and provides good information on the scientific values with regard to developing the HOV. The results can be utilized in evaluating and planning several alternatives related to developing the HOV.
Evaluating the Economic Damages to Anglers of the Marine Recreational Charter due to the Herbei Spirit Vessel Oil Spill
Pyo, Heedong ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 289~302
DOI : 10.4217/OPR.2014.36.3.289
This paper aims to evaluate the indirect economic damages to anglers of the marine recreational charter caused by marine pollution associated with the Herbei Spirit vessel, which spilled 12,547 kl of crude oil in Taean coastal areas in December 2007. In order to evaluate the indirect cost to anglers of the charter fishing, consumer surplus for charter fishing is estimated using a Poisson model (PM), a negative binomial model (NBM), a truncated Poisson model (TPM), and a truncated negative binomial model (TNBM), which account for the characteristics of count data (non-negative discrete data), for individual travel cost method (ITCM). Because of over-dispersion problem in PM and TPM, NBM and TNBM are considered to be more appropriate statistically. All parameters such as income, fishing careers, travel cost and catch that are estimated are statistically significant and theoretically valid. Based on TNBM results, consumer surplus per trip and per person was estimated to be 277 thousand won, total consumer surplus per person and per year about 2.3 million won, and the marginal effect of consumer surplus on % changes in catch rate is about 33 thousand won. The consumer surplus was converted into total indirect economic damages for aggregation which are evaluated to be 125 billion won, reflecting the number of anglers and damage rate.
The Trends and Outlook of Technology Development for Oil and Gas in the Arctic
Lim, Jong-Se ; Shin, Hyo-Jin ; Kim, Ji-Su ; Jin, Young-Keun ;
Ocean and Polar Research, volume 36, issue 3, 2014, Pages 303~318
DOI : 10.4217/OPR.2014.36.3.303
The rising global demand for energy resources may lead to greater interest in the Arctic region. Since it has various resources, such as oil and gas, and large potential as a strategic location in exploration and production (E&P), there is likely to occur island sovereignty issues between the five arctic costal states and other countries. While global warming has led to the opening of the Northeast Passage and the Northwest Passage, several obstacles may impede the development of this area such as the low temperature environment, infrastructure problems in a limited area, flow assurance, environmental regulations, etc. To overcome these problems, various techniques have been applied in the exploration, development, production, transportation, and environment fields and it seems to be made technical development in extreme environment. In this study, the E&P status of representative states and development technologies in the Arctic region have been summarized with regard to carrying out E&P related to drilling, development, production, and operation in oil and gas fields. Furthermore, environmental factors have been taken into account to enhance progress with regard to E&P and ensure sustainable development in the Arctic. On that basis, it will be possible to secure oil and gas field development, production technology and R&D infrastructure in the Arctic.