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2020, Vol.20, No.3

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  • 1.

    Russian Exploration in Korean Peninsula since 19th Century: Focusing on 「KOPEИ」

    Kyeong Park | 2020, 20(3) | pp.1~12 | number of Cited : 1
    One of the areas of interest that Russian Empire had in Korea was its value as a stable source of food especially beef, as seen in Garin’s travel journal and KOPEИ. Russia named about 200 marine and coastal features of the East Sea via exploration. Most of place names have disappeared, but some remain as marine names near Primorsky state, so toponym users can find those names such as Bukhta Reid Pallada and Zaliv Posiet (Posiet Bay) through Google Earth service. The survey of inland areas seemed to be as an important part as the survey of coastal areas. It is believed that the KOPEИ expresses the direction of the Russian government's interest in Korea. Besides the contents of history, language, administration, and political systems, the contents of the KOPEИ will be sufficiently important enough for geographical research on Korean physical geography, Korea territory, as well as economy and trade until the 19th century.
  • 2.

    A Study on the Space-time Path Analysis of COVID-19 Patients through Geovisualization of Spatiotemporal Data

    Jae-Seong Ahn , Choi, Jin Mu , LEESANGWON and 1 other persons | 2020, 20(3) | pp.13~22 | number of Cited : 4
    Contact with the patient is an important transmission route for the transmission of infectious diseases, so an individual level information of activity can be used as an important index to determine risks of infection. The purpose of this study is to propose a method to understand the migration characteristics of COVID-19(Coronavirus Disease 2019) patients by using personal movement. To this end, a geovisualization prototype environment has been developed with the concept of time geography in order to analyze data on the movement route of corona patients in Seoul. In the geovisualization prototype, a three-dimensional path is used to visualize the visited places of COVID-19 patients by time period. In addition, visit time and stay time by place of visit are expressed in a cylinder reflecting the concept of the station so that it is possible to determine whether or not the visiting places are overlapped by the patients. The visualization method proposed in this study has the following advantages. First, it is possible to analyze the spatiotemporal movement characteristics by simultaneously visualizing the spatiotemporal ranges and characteristics of the movement of COVID-19 patients. Second, it is possible to identify the shared location of the infected patients through visualization of the station along the path of their movement.
  • 3.

    The Distribution and Name Characteristics of Expressway Service Area in South Korea

    Song Hoyul | 2020, 20(3) | pp.23~43 | number of Cited : 4
    The expressways in South Korea has been used since 50 years ago. However, there was no research has been conducted on the expressway’s own major facilities. So, writer analyzed the distribution and name characteristics of the service area (SA) after the same research of the expressway junction. The analysis results of 231 SAs’ distibution are as follows. Both simple total number of SAs for each route and the number of SAs per unit distance were high for the main trunk lines. By region, the number of SAs was higher in provincial areas than in metropolitan areas and nearby areas, and it showed a characteristic of scattering unlike junctions. The number of SAs per area is high along the Gyeongbu axis, and the number of SAs per population is high in the provincial areas. The analysis results of 136 SAs’ name are as follows. In word type analysis, ‘Sino-Korea’ word was 89.7%. In syllable analysis, mean number of syllable was 2.75 and syllable of SA names has exponential distribution. In name source analysis, SA name related to administrative district name was outstanding with 66.9% and combined name of SA was followed by 19.1%. Many of recently established or changed names of SAs are combined names, so it is important to minimize discomfort for users.
  • 4.

    Morphological characteristics and distribution of bouldery slope landforms in Unbongsan, Goseong, South Korea

    Choi, Kwang Hee | 2020, 20(3) | pp.45~56 | number of Cited : 0
    Unbongsan Mountain is a volcanic edifice with a unique landscape, which is located alone between granite mountains in Goseong-gun, Gangwon-do. The slopes of the mountain are partially covered with talus and block streams consisting of large basalt bouders. The geological features of this mountain have been investigated in detail. However, their overall distribution patterns and development processes are not well known. This study aims to classify these bouldery landforms through mapping the location of basalt blocks, the analysis of the morphological characteristics of the slope, and field surveys on the large boulders. The exposed boulders are concentrated in the western valleys of the mountains and are rarely found in the eastern slopes. Field data show that all the boulders are composed of basalt rocks with columnar joints, and that there is a long-axis isotropy related to the elevation and gradient of slope. In addition, the result of TPI and slope analysis for DEM indicate that block stream was mainly distributed along the valley, and the talus appeared in the steep ridge and the lower part of the cliffs. The slope classification indicates that flat mountain tops, basalt cliffs, talus, and block streams develop in sequence, as the distance from the center of the mountain increases. The bouldery landforms of Unbongsan Mountain illustrate the process of slope change that appears as a slope retreat in a volcanic edifice.
  • 5.

    Comparing Airport and Air Carrier Networks of Korea, China, and Japan in the International Aviation Market

    Yongha Park | 2020, 20(3) | pp.57~71 | number of Cited : 6
    The purpose of this study is to figure out structural differences among aviation networks of Korea, China, and Japan through analyzing their major airports’ and air carriers’ networks in the international aviation market. This study employs three (degree, betweeness, closeness) centrality, network density, and assortativity measures in the network analysis, in order to evaluate international connectivity of airports and air carriers operating in the three countries. The main results are as follows. First, ICN (Incheon International Airport) is positioned as a top-tier airport among major airports in Asia, in terms of international connectivity evaluated by the three centrality measures. Also, we confirm that the connectivity of secondary hubs in China and East Asia markets has rapidly increased from 2015 to 2019, according to increasing routes connecting between those regions. Next, through comparing major airports’ networks of the three countries in East Asia, we find that in Korea the centrality gap between ICN and the rest of international airports is larger than gaps among major airports in the counterparts, mainly affected by their hub network structures. However, LCCs (Low Cost Carriers) in Korea have the smaller dependence on ICN than FSCs (Full Service Carriers) according to operating regional airports as their secondary hubs. From the results, we confirm that it is necessary to pursue improving the international connectivity of regional international airports through expanding LCCs’ air networks as a suitable strategy to improve the accessibility to international flights for local residents, as well as to alleviate the imbalance of the national airport system.
  • 6.

    The Impacts of Urban Sprawl on the Commuting Patterns of the Metropolitan Regions in Korea

    Nayoung Ryu , Insu Hong | 2020, 20(3) | pp.73~92 | number of Cited : 2
    The purpose of this paper is to analyze the impacts of urban sprawl on the commuting patterns of the Metropolitan Regions in Korea. Sprawl related indexes and socio-economic metrics as explanatory variables and commuting patterns using a privately-owned car (Model 1) and public transportation (Model 2) as dependent variables construct two OLS models. Spatial regression models and GWR models reflecting spatial dependence and/or spatial heterogeneity are also executed to investigate the relationship between urban sprawl and commuting patterns. The results are as follows. First, the goodness-of-fit of both models improve from OLS to spatial regression and GWR. Second, density among sprawl indexes is strongly significant related with commuting patterns. Street accessibility in Model 1 and land use mix in Model 2 are slightly related with commuting patterns in specific regions. Third, GWR models show significant socio-economic variables in certain regions which are not detected in OLS or spatial regression models.
  • 7.

    The Diversity of Random Spatial Aggregation Procedures: A Simulation Study

    LEE, SANG-IL , Monghyeon Lee | 2020, 20(3) | pp.93~107 | number of Cited : 1
    The main objectives of this study are to discuss on the diversity of random spatial aggregation, to compares pros and cons of the different random spatial aggregation procedures, and to recommend a procedure which is believed to be superior in validity. A basic procedure for random spatial aggregation is proposed and an implementation algorithm based on the spatial proximity matrix is introduced. All six distinctive algorithms are derived on the basis of two dimensions which facilitate the diversity of random spatial aggregation. A simulation experiment is carried out to compare pros and cons of the six procedures and its results are evaluated based on the contiguousness and compactness criteria. Main findings are as follows. First, Category B seems to be more consistent in terms of contiguousness in comparison to Category A and C. Second, Category 2 appears to generate more compact final zones in comparison to Category 1. Third, Category B and C (especially B) seem to be more consistent in terms of compactness. Based on all the experiment results, Type B2 seems to be the superior algorithm for random spatial aggregation. It tends to generate more compact final zones and more consistent results in terms of both contiguousness and compactness. This study can be seen as a significant achievement in the sense that it shows that the concept of random spatial aggregation can be considered in a diversified manner, and one out of a certain group of candidates can be chosen as superior on the basis of the degree of randomness and relevancy.
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