• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.7 no.4
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• pp.267-285
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• 2002

Dok Island, a Pliocene volcano, lies in the southwestern part of the East Sea. Most the work to date have focused primarily on the petrolography of the island, and as a result, the morphological characteristics and internal structure of the volcanic edifices of the Dok Island remain poorly understood. To provide better constraints on these features, bathymetric data with multibeam echo sounder, 32-channel seismic and 3D gravity modeling were used in this study. Three positive topographic highs are present in the study area, and these highs satisfy the seamount criteria. They are named as Dokdo, Tamhae, and Donghae seamounts. 32-channel seismic survey was conducted to investigate the sediment thickness of the area, which shows that there are no sediments near the summit of seamounts. Away from the seamounts, however, sediment becomes thick(>2000 m) toward the western part of the study area, and sediments in the northern and southern parts are about 1000 m thick. Free-Air gravity anomalies in this study generally follow the bathymetric feature with less than -20 mGal at the western part, but increase towards the seamounts. In the summit of the Dokdo Seamount, anomalies reach over 120 mGal, and in Tamhae and Donghae seamounts, the peak anomaly shows 90 and 70 mGals, respectively. All seamounts have an isolated volcanic conduit in their centre and show regional compensation root with 0.5～1.5 km thickness. The flat-topped summit of the seamounts is probably caused by wave truncation, indicating the sea level at the time of formation of the flat-topped geometry. Comparison between the present-day sea level and subsidence level during the opening of the East Sea suggests that the seamounts in the study area have subsided by 200～300 m after the formation. Furthermore, it implies that the seamounts formed over 12～10 Ma.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• v.29
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• pp.39-61
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• 2006

The governing law in international commercial arbitration may be divided into governing arbitration law and governing substantive law. The former governs the parties' arbitration agreement and the conduct of any subsequent arbitration. But the later governs the parties' substantive rights and obligations, which means the law that governs contract formation and performance, and the law to be applied by the arbitrator to the merits of the dispute. The purpose of this paper is to examine how to determine the substantive governing law when there is express choice or implied choice between parties. Moreover this author checked any restrictions on party autonomy and also any possibilities to deviate from the governing law. In case of express choice the sources of the law or rules of law might be the national law of one of the parties, the neutral law, the general principles of law or lex mercatoria according to the arbitration law selected by the arbitral tribunal. Some arbitration laws or rules empower the arbitrator to decide the case ex aequo et bono or to act as amiable compositions. If the governing law could be determined expressly or impliedly by the parties, the arbitral tribunal would make a selection. In this case the criteria for selecting a governing law are not exactly same from country to country. But failing any indication by the parties as to governing law, the arbitral tribunal should apply the rules of law, the law or the law under the rule of conflict that the arbitrators consider applicable, according to the governing arbitration law. Among the connecting factors offered by the conflict rules, (which means the factors that the arbitrators consider applicable), some legal systems give precedence to the formation of the contract, other system to the place of performance of the contract, and others to the closest connection or centre of gravity. But the Rome Convention, which unified the conflict rules of the contracting states, gives precedence to the law of the domicile of the party which has to effect the performance which is characteristic of the contract. Finally this author suggested the Choice of Law Clause which covers governing substantive law and governing arbitration law at the same time. Thus the UNIDROIT Principles as well as any national law may be included as a governing law in international arbitration. So when we make sales or service contract, we should take into consideration of the UNIDROIT Principles as a governing law or a supplement to the governing law.

• Journal of the Korea institute for structural maintenance and inspection
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• v.27 no.6
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• pp.152-161
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• 2023

In general, large-capacity hydrogen storage vessels, typically in the form of vertical cylindrical vessels, are constructed using steel materials. These vessels are anchored to foundation slabs that are specially designed to suit the environmental conditions. This anchoring method involves pre-installed anchors on top of the concrete foundation slab. However, it's important to note that such a design can result in concentrated stresses at the anchoring points when external forces, such as seismic events, are at play. This may lead to potential structural damage due to anchor and concrete damage. For this reason, in this study, it selected an vertical hydrogen storage vessel based on site observations and created a 3D finite element model. Artificial seismic motions made following the procedures specified in ICC-ES AC 156, as well as domestic recorded earthquakes with a magnitude greater than 5.0, were applied to analyze the structural behavior and performance of the target structures. Conducting experiments on a structure built to actual scale would be ideal, but due to practical constraints, it proved challenging to execute. Therefore, it opted for an analytical approach to assess the safety of the target structure. Regarding the structural response characteristics, the acceleration induced by seismic motion was observed to amplify by approximately ten times compared to the input seismic motions. Additionally, there was a tendency for a decrease in amplification as the response acceleration was transmitted to the point where the centre of gravity is located. For the vulnerable components, specifically the sub-system (support columns and anchorages), the stress levels were found to satisfy the allowable stress criteria. However, the concrete's tensile strength exhibited only about a 5% margin of safety compared to the allowable stress. This indicates the need for mitigation strategies in addressing these concerns. Based on the research findings presented in this paper, it is anticipated that predictable load information for the design of storage vessels required for future shaking table tests will be provided.