Jung-Rack Kim

Jung-Rack Kim
University of Seoul · Department of Geo-Informatics

Ph.D

About

133
Publications
9,288
Reads
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900
Citations
Additional affiliations
January 2006 - April 2008
University College London
Position
  • PostDoc Position
Education
September 1998 - September 2005
University College London
Field of study
  • Remote Sensing
April 1995 - March 1997
Sogang University
Field of study
  • Electronics
September 1989 - March 1992
Yonsei University
Field of study
  • Astronomy

Publications

Publications (133)
Article
Full-text available
The unprecedentedly strong 2016 Gyeongju and 2017 Pohang earthquakes on the Korean Peninsula aroused public concern regarding seismic hazards previously considered improbable. In this study, we investigated the effects of recent seismic activity close to the epicenters of both earthquakes in the heavy industrial complex of Ulsan. This was performed...
Article
Full-text available
The Gobi Desert in southern Mongolia has been identified as the strongest dust storm hot spot threatening public health and socioeconomic activities in East Asian countries. Despite its significance, the complete mapping of the aeolian surface erosion in southern Mongolia remains unresolved because of extensive region of interest cannot be interpre...
Article
Full-text available
Aeolian erosion occurring in sand deserts causes significant socio-economical threats over extensive areas through mineral dust storm generation and soil degradation. To monitor a sequence of aeolian erosion in a sand desert area, we developed an approach fusing a set of remote sensing data. Vegetation index and Interferometric Synthetic Aperture R...
Article
Full-text available
The underground burning in the Jharia coal mine (JCM) in India is a highly devastating environmental hazard inducing various adverse consequences. In the present study, we carried out time series analyses based on Interferometric Synthetic Aperture Radar (InSAR) and land surface temperature (LST) to study the environmental risk. First, a permanent...
Article
Full-text available
Lava tubes, a major geomorphic element over volcanic terrain, have recently been highlighted as testbeds of the habitable environments and natural threats to unpredictable collapse. In our case study, we detected and monitored the risk of lava tube collapse on Jeju, an island off the Korean peninsula’s southern tip with more than 200 lava tubes, by...
Article
The results of surface morphology and InSAR analyses carried out along a NNE-SSW oriented (~7 km-long) transfer fault are presented. This structure actively accommodates differential motion across two blocks in the western Sub-Himalayan belt of India. Segmentation is most pronounced in this sector of the accretionary wedge, where minimal climatic v...
Article
Full-text available
Machine learning (ML) algorithmic developments and improvements in Earth and planetary science are expected to bring enormous benefits for areas such as geospatial database construction, automated geological feature reconstruction, and surface dating. In this study, we aim to develop a deep learning (DL) approach to reconstruct the subsurface disco...
Article
Full-text available
The Martian mid-latitudes contain numerous small water-ice deposits, collectively termed viscous flow features (VFFs). The shape and topography of the deposits contain information on their past flow history and formation process. In order to access this information, it is imperative to get information on their deformational properties. Here we use...
Article
Full-text available
To fulfil the strong need for monitoring seasonal difference of velocity over the Greenland ice sheet (GrIS), we developed an approach based on the fusion of multiple temporal and multi sensor remote sensing observations. We used spaceborne synthetic aperture radar (SAR) and optical data over the Russell glacier in southwestern Greenland. Firstly,...
Article
Full-text available
As demonstrated in prior studies, InSAR holds great potential for land cover classification, especially considering its wide coverage and transparency to climatic conditions. In addition to features such as backscattering coefficient and phase coherence, the temporal migration in InSAR signatures provides information that is capable of discriminati...
Article
Full-text available
Global warming has been a worldwide issue and significantly increasing icecap melting rate over polar area. Consequently the sea level rises continuously and poses a fundamental threat to whole human beings. Since the mass loss of Greenland ice sheet (GrIS) is highly correlated to the velocity of glacier movement, this study aims to monitor the imp...
Conference Paper
Full-text available
We are carrying out an instrument study for a next-generation laser altimeter on a spacecraft orbiting Mars. The science focus is on the geodetic control and morphology of polar ice caps of the planet. We discuss the scientific goals and the technical requirements of the instrument as well as possible spacecraft orbits and mission scenarios.
Article
Web-based planetary image dissemination platforms usually show outline coverage of available data and offer querying for metadata as well as preview and download. While the usual form of presenting multiorbit data sets is to merge the data into a larger mosaic, for change detection purposes it is essential to maintain the individual images as an im...
Conference Paper
The rapid ground water depletion, especially by the anthropogenic activities occasionally causes various environ-mental disasters such as intensive ground subsidence. An obvious case was founded over Northwest India centeredon Punjab and Haryana. The ground water depletion over Northwest India resulted from the overuse of ground-water by the demand...
Article
Landslide risk assessment based on Differential Interferometric SAR analyses (DInSAR) is associated with a number of error effects. We here approach the problem of assessing landslide risks over mountainous areas, where DInSAR observations are often influenced by orographic effects and inaccurate base topographies by employing a dedicated error com...
Conference Paper
A large ground deformation which may be caused by a significant groundwater depletion of the Northwest India Aquifer has been successfully observed throughout space geodesy techniques (Tsai et al, 2016). Employing advanced time-series ScanSAR InSAR analysis and Gravity Recovery and Climate Experiment (GRACE) satellites data, it revealed 400-km wide...
Article
Full-text available
Optical and infrared remote sensing may provide first-order clues for the identification of potential impact structures on the Earth. Despite the free availability of at least optical image data at highest resolution, research has shown that remote sensing analysis always remains inconclusive and extensive groundwork is needed for the confirmation...
Article
Full-text available
At the present time, arguments continue regarding the migration speeds of Martian dune fields and their correlation with atmospheric circulation. However, precisely measuring the spatial translation of Martian dunes has been rarely successful due to the technical difficulties to quantitatively observe expected small surface migrations. Therefore, w...
Article
Full-text available
The Shallow Subsurface Radar (SHARAD), a sounding radar equipped on the Mars Reconnaissance Orbiter (MRO), has produced highly valuable information about the Martian subsurface. In particular, the complicated substructures of Mars such as polar deposit, pedestal crater and the other geomorphic features involving possible subsurface ice body has bee...
Article
Full-text available
There has been a revolution in 3D surface imaging of Mars over the last 12 years with systematic stereoscopy from HRSC. Digital Terrain Models (DTMs) and OrthoRectified Images (ORIs) have been produced for almost 50% of the Martian surface. DLR, together with the HRSC science team, produced 3D HRSC mosaic products for large regions comprising aroun...
Article
Full-text available
Mt. Baekdu is a volcano near the North Korea-Chinese border that experienced a few destructive eruptions over the course of its history, including the well-known 1702 A.D eruption. However, signals of unrest, including seismic activity, gas emission and intense geothermal activity, have been occurring with increasing frequency over the last few yea...
Conference Paper
The increasing population and irrigation demand in decades in the states of Punjab and Haryana located at northwest India has been causing one of the most significant groundwater depletion (GWD) globally at Northwest India Aquifer (NWIA). To observe its long-term and seasonal subsidence behavior over wide area, we purpose two strips of PALSAR-1 (Ph...
Conference Paper
As Oliveira et al. (2014) summarised, based on time-series synthetic aperture radar (SAR) data, potential uses of persistent scatterer interferometric SAR (PS-InSAR) technique include (i) the identification of individual landslides and the delineation of generalized unstable areas; (ii) the redefinition of limits of ancient landslides; (iii) the id...
Conference Paper
Full-text available
There has been a revolution in 3D surface imaging of Mars over the last 12 years with systematic stereoscopy from HRSC and the production for almost 50% of the Martian surface of DTMs and ORIs. The iMars project has been exploiting this unique set of 3D products as a basemap to co-register NASA imagery going back to the 1970s. DLR have produced 3D...
Conference Paper
Understanding planetary atmosphere-surface and extra-terrestrial-surface formation processes within our Solar System is one of the fundamental goals of planetary science research. There has been a revolution in planetary surface observations over the last 15 years, especially in 3D imaging of surface shape. This has led to the ability to be able to...
Conference Paper
Understanding planetary atmosphere-surface and extra-terrestrial-surface formation processes within our Solar System is one of the fundamental goals of planetary science research. There has been a revolution in planetary surface observations over the last 15 years, especially in 3D imaging of surface shape. This has led to the ability to be able to...
Conference Paper
There is great interest in the mechanism and consequences of arctic ice sheet migration in the context of worldwide climate change. An in-depth investigation of glacial movement involving supra/under glacial hydrological channel activities is key to understanding the acceleration of Greenland’s ice sheet changes and needs to be established as an in...
Conference Paper
Ice sheet change in Greenland have been traced through various remote sensing observations. However, the uncertainties in the observed ice sheet change were not fully addressed with a single method. Especially the correlation tracking between outlet glacial movements and sub-glacial channel activities which may have a key for the understanding of G...
Conference Paper
The precise trace of Greenland ice sheet migration and the establishment of a model are still difficult tasks in spite of recent technical achievements. In this study, we employed multi-sensor observation and numerical modelling to tackle the uncertainties in the observed changes of the arctic ice sheet - especially correlation tracking between out...
Conference Paper
The Tatun volcano group is composed of 29 volcanoes and was once known as an extinct volcano. However, based on the strong ground thermal activities recently observed by local monitoring station (Taiwan Volcano Observatory, 2014), it was implied that the existence of underground magma chamber is possible (Lin, 2009; Yang, 2009). As Tatun volcano gr...
Conference Paper
We assess a processing system for generating multi-resolution digital terrain models (DTM) of Mars within the the iMars project of the European Seventh Framework Programme. This system is based on a non-rigorous sensor model algorithm developed jointly by University of Seoul and University College London for processing high-resolution stereoscopic...
Poster
Full-text available
We designed the system specifications of P/L band planetary imaging SAR for the significantly interesting planetary/satellite surfaces and evaluate required power consumption, estimated weight and resolutions which can reach upto 3-7 meter resolution in the case of Martian L band SAR. On the other hand, we investigated the possibilities for the P/L...
Article
Full-text available
Understanding the role of different planetary surface formation processes within our Solar System is one of the fundamental goals of planetary science research. There has been a revolution in planetary surface observations over the last 8 years, especially in 3D imaging of surface shape (down to resolutions of 10cm) and subsequent terrain correctio...
Article
Stereo analysis of in-orbital imagery provides valuable topographic data for scientific research over planetary surfaces especially for the interpretation of potential fluvial activity. The focus of research into planetary fluvial activity has been shifting towards quantitative modeling with various spatial resolution DTMs from visual interpretatio...
Conference Paper
We assess several algorithms for generating digital terrain models (DTM) of Mars using high-resolution stereoscopic images produced by the High Resolution Imaging Science Experiment (HiRISE) camera and Context Camera (CTX) onboard the NASA Mars Reconnaissance Orbiter (MRO) spacecraft. One of the algorithms was developed jointly by University of Seo...
Conference Paper
Understanding the role of different planetary surface formation processes within our Solar System is one of the fundamental goals of planetary science research. There has been a revolution in planetary surface observations over the last 15 years, especially in 3D imaging of surface shape. This has led to the ability to be able to overlay different...
Article
Crater, and five other relatively young Late Hesperian to Amazonian-age Martian craters exhibit channelized alluvial fans that are sourced from bedrock-eroded catchments. These catchments emerge from the crests of sloping surfaces, suggesting a formation mechanism that involved precipitation. The evidence for fluvial activity at all six craters is...
Article
In this study, we tested the application of hydraulics analysis with multiresolution martian DTMs together with 2-D LISFLOOD-FP.
Article
Mt. Baekdu, located in the northeastern Korean peninsula close to the Korea-China border, has been documented to have had a few destructive eruptions in history. Even though it has been dormant since the major eruption in 1702 A.D, the seismic activity in Mt. Baekdu has increased over the last few years. Together with the small-scale but constant e...
Conference Paper
In terms of data availability and error correction, landslide forecasting by Differential Interferometric SAR (DInSAR) analysis is not easy task. Especially, the landslides by the anthropogenic construction activities frequently occurred in the localized cutting side of mountainous area. In such circumstances, it is difficult to attain sufficient e...
Article
One of the key issues for planetary, especially Mars surface exploration, is how to make an objective assessment of criteria for landing sites selection for future rovers, sample return missions and landers considering topographic variables such as slope, altitude and roughness as well as their physical scattering properties. For these purposes, st...
Article
Stereo analysis of orbital imagery is highly valuable for scientific research in planetary surface. Thus, the processing of planetary stereo imagery has been progressed with various approaches and resulted in a series of uncontrolled topographic products. In order to fully utilize the data derived from image systems carried on various planetary orb...
Article
With the increasing concern about global warming, the estimation of the CO2 sink capacity of the biosphere has become one of the main issues of remote sensing studies. This paper discusses the estimation of CO2 storage capacity in forests using airborne light detection and ranging (lidar) data. To achieve the correct biomass estimation, a processin...
Article
Mt. Baekdu, located in the northeastern Korean peninsula close to the Korea-China border, has been documented to have had a few destructive eruptions in history. Even though it has been dormant since the major eruption in 1702 A.D, the seismic activity in Mt. Baekdu has increased over the last few years. Together with the small-scale but constant e...
Article
Since Zebket et al. (1986) developed Interferometric SAR (InSAR) technique, it has been widely accepted that InSAR is a useful tool for generating topographic products. Differential InSAR was further applied to trace surface deformation through the InSAR technique. Even so, the limitation of such remote sensing method is that the small surface defo...
Article
At the present time, the sandy desert is rapidly expanding worldwide, and this can potentially result in increased risks for socioeconomic as well as anthropogenic activities. For example, the increasing occurrences of mineral dust storms, which have presumably originated in the sandy deserts in northwest China, have become a serious threat to huma...
Chapter
The global warming caused by CO2 greenhouse effect becomes a world wide critical issue nowadays. In order to make suitable and sustainable policies for fully managing and monitoring the CO2 emission and reduction, the identification of CO2 volume and spatial distribution is highly crucial for the local environmental authorities. Therefore, an indir...
Conference Paper
Although there was no eruption occurring for three hundred thousand years, the existing ground monitoring reveals that Datun volcanoes may be still active. As Datun volcano group is very close to Taipei City, serious damages would occur if the volcanoes erupted. Therefore it is critical to understand the behaviors of the volcanoes. To this end, we...
Conference Paper
Landslide is one of the most dreadful natural hazards and the prime risk source causing lethal damages in many countries. In spite of various attempts to measure the landslide susceptibility by the remote sensed method including Differential Interferometric SAR (DInSAR) analysis, the construction of reliable forecasting systems still remains unsolv...
Conference Paper
Full-text available
Considering the wide coverage, the transparency from climate condition, Interferometric Synthetic Aperture Radar (InSAR) possesses a great potential for the landcover classification as shown in many precedent researches. In addition to the capability of InSAR signatures such as amplitude and phase coherence, the temporal variations of them provide...
Conference Paper
Earth is the only planet possessing an active hydrological system based on H2O circulation. However, after Mariner 9 discovered fluvial channels on Mars with similar features to Earth, it became clear that some solid planets and satellites once had water flows or pseudo hydrological systems of other liquids. After liquid water was identified as the...
Conference Paper
Landslide is one of the most dreadful natural hazards and the prime risk source causing lethal damages in many countries. In spite of various attempts to measure the landslide susceptibility by the remote sensed method including Differential Interferometric SAR (DInSAR) analysis, the construction of reliable forecasting systems still remains unsolv...
Article
Full-text available
The planetary topography has been the main focus of the in-orbital remote sensing. In spite of the recent development in active and passive sensing technologies to reconstruct three dimensional planetary topography, the resolution limit of range measurement is theoretically and practically obvious. Therefore, the extraction of inner topographical h...
Article
Topography over terrestrial or other planetary surfaces is an important base data for virtual reality construction. In particular, with inaccessible topography such as the Martian surface, virtual reality provides great value not only for public interaction but also for scientific research. For the latter application, since field surveys are essent...
Article
Estimating magnitudes of flow rates in outflow channels has a central role in developing understanding of the paleohydrology of Mars. The typical approach to flow estimation is to identify geomorphic features, which indicate bankfull levels, and then use a hydraulic model to convert these levels into flow rates. Data constraints have meant that imp...
Article
Mojave Crater likely records an unusual morphology that represents an early and transient stage of crater rim degradation by precipitation. We describe how the growth of catchment-fan systems on intracrater ranges influences crater rim evolution.
Article
Reconstructing ancient sedimentary environments on Earth is not a trivial task. Sedimentologists typically use detailed analysis of sedimentary features in rocks together with geometrical stratigraphic relationships and couple this with models of modern systems to reconstruct palaeo-river and deltaic landform features and environments. However, the...
Article
The global desert coverage has been rapidly expanding due to the reasons such as climate change and uncontrolled human activities. Thus, the importance of the observation tool not only for the growth of desert but also for the sandy dune activity has been recently noticed. In this study, we developed the monitoring methods of sand dune field by the...
Article
Full-text available
The origin mechanisms and geologic evolution of chaotic terrain on Mars are poorly constrained. Iani Chaos, located at the head Ares Vallis, is among the most geomorphologically complex of the chaotic terrains. Its morphology is defined by (1) multiple, 1 to 2 km deep basins, (2) flat-topped, fractured plateaus that are remnants of highland terrain...
Article
The automated detection and reconstruction of artificial structures, larger than 10 m2 in area using high resolution satellite images and Light Detection and Ranging (LiDAR) data through 3-dimensional shapes and/or 2-dimensional boundaries is described here. Additionally, it is demonstrated how individual tree crowns have been detected with more th...
Article
In this analysis we posit that cataract initiation and retreat within a tributary canyon to Ares Vallis were triggered by drops in base level at its mouth, a direct result of incision of the main branch of Ares Vallis during long-lived episodic flooding within both systems.
Article
It demonstrats how the modern photogrammetry and the visualization technician can reconstruct virtual martian surface. The DTMs and ortho imagery from stereo cameras were processed . Then the topographic data were indigested into a VR system to demonstrate the potentials.