• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.1
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• pp.34-42
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• 2012

This study aims to suggest the secure indicator of parks and green areas according to the properties of the location. There were 31 study areas where negotiation was finalized from 2001 to 2008. The location types were divided by land use type before development and the ratio of mountainous and constructed parks, the ratio of green change and so forth were analyzed according to the those types. As a result, location types were classified into mountainous type, arable land type, urban district type. In terms of locational property, even though the ratio of parks and green areas was the highest at 24.9% in arable land type, the ratio was not much different from the others. Mountainous type depends on the ratio of mountainous park with 10.5%, and arable land type, and urban district type has high ratio of constructed parks. And, the ratio of green change arable land type is degraded by 32.8% and the ratio of mountainous green change is serious in the mountainous type. As a result of the selection of negotiation indicator, arable land type is closely related to the ratio of parks and green areas and the ratio of green change; mountainous type, the ratio of park and green, the ratio of mountainous green change and the ratio of constructed park and green; urban district type, the ratio of green areas.

• Journal of the Korean association of regional geographers
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• v.13 no.2
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• pp.119-128
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• 2007

Grain-size trend analysis is the methodology to obtain the net sediment transport pattern from the spatial trends of grain size parameters. It has the potentials to be an effective tool to address the morphological changes of the deltaic barrier islands in the Nakdoog River once we make sure net transport patterns inferred from grain size trend analysis represent the morphological evolution patterns. This research aims to investigate the applicability of the net transport patterns obtained by 'transport vector', proposed by Gao and Collins(1992), to understanding the morphological changes of the Nakdong River deltaic barrier islands. The results indicate that the net transport directions are overall in concordance with the morphological evolution patterns; however, the level of concordance is low in the island with fast growing rate. The reasons may be match or mismatch of temporal scales involved between processes represented by net transport patterns and morphological change analyzed or the rate of morphological change. Consequently, the application of grain size trend analysis in analyzing the morphological changes of deltaic barrier islands requires the careful consideration of temporal scales involved.

• Journal of Navigation and Port Research
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• v.43 no.1
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• pp.64-71
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• 2019

It is very important to understand the mechanism of estuary topographic changes for the study of estuary management and treatment methods. In this study, the effects from the land-side, such as rainfall, river discharge, sediment discharge, and sea side, such as tide, tidal current, wave and surface sediments related to the topographic changes of the Nakdong river estuary were investigated and analyzed. Based on the analyzed data, topographic modeling was performed to analyze the topographic change and contribution of external force conditions. As a result of numerical modeling, the topographic change showed that erosion that predominates in the water directly affected by the discharge of the estuary barrage. The deposition predominates in the indirectly affected tideland. As sediments moved along the water way being sorted and distributed by the wave, the deposition predominated in the front of the barrier island. Compared with the deposition dominance, which is the result of the topographic change prediction, the impact of each external force condition gives larger erosion. However, the combined impact of each external force condition showed deposition dominant. Therefore, the topographic changes of the Nakdong river estuary are considered to be the result of various complex external factors. The impacts of each external force condition show the different contribution to each comparison area. These results should be considered when establishing the estuary management method. It must be understood that this is the result of complex interactions.

• Korean Journal of Remote Sensing
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• v.20 no.2
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• pp.103-116
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• 2004

The mesoscale atmospheric models to produce surface temperature can not generally consider the effect of the sloped terrain for direct solar radiation. These have not showed the regional difference of solar radiation and as a result, have made the big error in the local surface temperature. Therefore, we wished to represent the exact locality of surface temperature by considering the geometric properties of surface as well as the vegetated properties of surface. The purpose of the study is to produce local surface ground temperature in sloped terrain diagnostically using surface Energy Balance Model (EBM) with the use of GRID model in Geographic Information Systems (GIS). In this study, surface inhomogeneity over southeastern part of Korean peninsula are considered in estimation of the absorbed surface solar radiation in terms of the illumination angle, depending on topographical aspect and slope in GRID. Also, the properties of vegetated surface which the major components for the variability of surface temperature are considered in terms of NDVI. The results of our study show the locally changes in the surface ground temperature due to local ground aspect and slope effect and local properties of vegetated surface. The more detailed distribution of local surface temperature may drive the local circulation at lower atmospheric and it may explain better the real local circulation.

• Korean Journal of Soil Science and Fertilizer
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• v.45 no.2
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• pp.266-271
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• 2012

This study was carried out to evaluate the land suitability for southern-type garlic cultivation associated with both temperature and soil constraints. The suitability analysis was conducted with hourly temperature data from 2001 to 2010 at all fifty seven meteorological stations and the soil-based suitability map of garlic provided by Rural Development Administration. Firstly the temperature data were processed by the growth stages (germinating, bulbing, and winter vegetation season), and then were adopted to limit the irrelevant lands. Next, as a result of overlaying each soil and temperature suitability map, the total 274,339 ha of area was mapped as highly suitable or suitable for southern-type garlic cultivation and the top four of the largest classified si-guns were identified as Naju, Jeongeup, Gochang, and Jinju. On the other hand, the statistical records of KOSIS (KOrea Statistical Information Service) showed lower amount of cultivation area than the analyzed results in the major production sites, Goheung, Sinan, Haenam, and Muan. However, it should not be regarded as exceptional because farmer's preference might not correspond to potential land usability.

• Journal of the Korea Society of Computer and Information
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• v.20 no.3
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• pp.57-67
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• 2015

In this paper, we proposed the geolocation method using target detection information in infrared images. Our method was applied to geolocation system of hostile targets in ground-to-ground field. The major distortion that has bad effect of geolocation was composed of optic, topography, GPS(Global Positioning System) and IMU(Inertial Measurement Unit) of reconnaissance unit. We proposed enhanced geolocation method to cope with optic and topography distortion using polynomial fitting and slant-range calculation model to overcome earth curvature problem, and the result showed that the performance of our method was good for system requirements.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.62-67
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• 2009

본 연구에서는 경기도 설마천 지역에 위치한 독립사면에서 시간에 따라 연속 측정한 토양수분을 이용하여 시계열 분석 을 수행하였다. 토양수분의 측정 방법은 장기간 토양수분의 확보에 신뢰성을 인정받은 TDR을 이용하였다. 관측망의 설계를 통하여 선정한 측정지점에 탐침을 매설하고 공간적인 분포를 가진 시계열 형태의 데이터를 수집하였다. 유출은 해당 사이트 인근에 위치한 사방댐과 전격비교의 수위계에서 실측한 값을 사용 하였다. 전이함수 모형을 사면에서의 토양수분 전이과정에 대응되도록 물리적으로 전개하고 실측한 토양수분 시계열 데이터로 분석한 결과와 비교하였다. 전이 함수 모형은 토양수분 시계열 데이터를 입력변수로 하고 유출 데이터를 반응 변수로 하여 전개하여 토양수분 변화량과 유출간의 전이함수 모형을 도출하였다. 시계열 모형의 전개는 크게 자료전처리, 모형구조의 규명, 모수추정, 모형진단 등의 과정을 통해서 적절한 모형을 도출하였다. 산지 사면에서의 토양수분을 전이함수에 의하여 전개한 모형은 지형적 분포 양상에 따라 특색을 나타내었다. 또한 2003년 가을과 2004년 봄의 전이함수 모형 추정을 통하여 계절별 특성이 나타났고, 모형양상에 원인을 검토해 보았다. 본 연구는 전이함수를 이용한 토양수분의 시계열 분석이 사면에서의 토양수분 변동특성을 지형적, 계절적 특성과 연계하여 이해하고 특성화 하는 과정의 적절한 도구가 될 수 있음을 보여주고 있다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.9 no.2
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• pp.438-444
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• 2005

In Korea, the situation to use a Information Communication Technology(In) was rapidly developed that the subscriber using CDMA mobile phone are about 3,601 ten thousand and the subscriber of very high-speed service for Internet using ADSL etc., are about 1,161 ten thousand, the base June, 2004. However, nevertheless the development of In and more rapid increase of subscriber, a farming, finishing villages and an islands are being exist a sharp difference of digital divide compare with a big city because of geometrical, economical reasons. In this paper, to put empasis in an Islands that the alienation class of Information are many exist, relatively small opportunity of information access because of geometrical, economical reasons, 1 search a ICT for Information Communication Network and propose a plan for Solution of Digital Divide of an Islands.

• Proceedings of the Korea Water Resources Association Conference
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• 2008.05a
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• pp.593-597
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• 2008

유역에서의 강우사상에 따른 일련의 수문학적 과정의 규명과 수자원의 효율적 관리를 위한 토양함수량을 산정하는데 토양수분의 시공간적 분포특성을 파악하는 것은 매우 중요하다. 연구유역은 경기도 파주시 적성면 설마리의 설마천 유역 내에 위치한 소유역이다. 대상유역의 정밀측량을 하여 수치고도모형(DEM)을 획득 하였다. 이 수치고도모형에 사용하여 수치지형분석을 통해 총 21지점을 선정하였다. 토양수분의 연직방향 변화를 알아보기 위해 각 지점의 10, 30, 60cm 깊이에 센서를 설치하여 토양수분을 측정하는 TDR (Time Domain Reflectometry)방식인 MiniTRASE를 이용하여 총 50채널을 통해 매 2시간 간격으로 토양수분의 변동을 관측하였다. 토양수분의 시공간적 분포특성을 분석하기 위해 획득된 자료를 바탕으로 시계열의 공간 분석 및 통계분석을 수행하였다. 토양수분 시계열에 대한 공간분석은 토양수분의 사면에서의 공간적인 분포가 사면의 지형적인 형상에 의해서 영향을 받는다는 것을 보여주고 있다. 그리고 통계분석을 통해 평균치의 표준편차가 대상 기간 동안 일정한 것으로 나타났고, 이는 대상사면에서의 토양수분 분포 특성이 기후나 식생의 변동성에 영향을 받지 않고, 지형이나 토질 같은 정적인 인자에 주로 영향을 받는다는 가설을 뒷받침한다. 이 결과는 토양수분의 시공간적 분포양상의 파악과 국내 사면에서의 수문기작들을 규명하는데 기여를 할 것으로 판단된다.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.1125-1129
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• 2007

본 연구는 하천에 대한 효율적 관리를 위하여 하천계획, 설계, 관리 등 하천업무에 필요한 3차원하천정보 기본계획을 바탕으로 GIS, RS 등의 신기술을 접목함으로써 현장에 방문하는 것과 유사한 하천현황을 한눈에 파악할 수 있는 3차원 하천지형정보시스템을 안양천 32.5km 구간을 시범적으로 구축하였다. 구축된 시범시스템을 통해 다양한 속성 및 대장정보의 제공이 가능하고 사실적인 하천현장의 3차원 구현으로 신속하고 효율적인 정보 획득이 용이하다. 이는 지속적이고 체계적인 하천정보의 활용을 극대화할 수 있을 뿐만 아니라 다양한 하천관리업무 및 중요한 의사결정에 이바지할 수 있을 것으로 사료된다.