Stephan van Gasselt

Stephan van Gasselt
National Chengchi University · Department of Land Economics

Dr. rer. nat.

About

454
Publications
42,445
Reads
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3,755
Citations
Additional affiliations
August 2017 - present
National Chengchi University
Position
  • Professor (Associate)
April 2016 - July 2017
University of Seoul
Position
  • Professor
May 2010 - March 2016
Freie Universität Berlin
Position
  • Professor
Education
February 2003 - February 2007
October 1994 - March 2001
Technische Universität Clausthal
Field of study
  • Geology and Paleontology

Publications

Publications (454)
Article
Full-text available
This contribution provides a concise review of the current developments and challenges in the domain of planetary cartography. Considered to be one of the more exotic branches of cartography, it currently re-positions itself due to (1) an increasing community-centric research interest, but also due to (2) the current development in the field of spa...
Conference Paper
This contribution provides a concise review of the current developments and challenges in the domain of planetary cartography. Considered to be one of the more exotic branches of cartography, it currently re-positions itself due to (1) an increasing community-centric research interest, but also due to (2) the current development in the field of spa...
Article
Full-text available
In recent decades, the research community has been dealing with a growing amount and variety of new research data and derived research information. While primary research data, as derived from instruments, are commonly well maintained, derived research data might not always share the same fate. Scientific studies, resulting in further derived data,...
Article
Full-text available
We present an object-based image analysis (OBIA) approach to identify temporal changes in radar-intensity images and to locate land-cover changes caused by mass-wasting processes at small to large scales, such as landslides. Our approach is based upon change detection in SAR intensity images that remain in their original imaging coordinate system r...
Article
Full-text available
Parking issues are an extraordinarily important topic in highly populated urban areas. To balance parking demand, the Taipei city government implemented a price adjustment during policy establishment. In the planning process, the Traffic Analysis Zone (TAZ) is a common analysis unit used for parking and transportation-infrastructure planning, which...
Article
Full-text available
Modern planetary maps are designed either as stand-alone products or as part of a map series and are commonly distributed in the Portable Document Format (pdf). With the advent of web-based map technology and its standardization, experimental steps towards digital-only and dynamic map display for planetary cartography have been made. Commonly, maps...
Chapter
Planetary cartography does not only provide an extensive basis for supporting planning activities in planetary exploration, e.g., landing-site selection, orbital observations, traverse planning, but it also supports mission conduct by, e.g., observation tracking and hazard avoidance mapping. It also provides the scientific and technical basis to cr...
Chapter
Full-text available
Taiwan enacted the Act of Renewable Energy in the year 2009 which promotes energy safety, green economy and a sustainable environment, and with that the government envisages a contribution of photovoltaic energy of up to 20% by the year 2025. In this study we look into the motivation and background of this energy policy, plans for implementation an...
Article
Full-text available
We used a grid-mapping technique to analyze the distribution of thirteen water- and ice-related landforms in Acidalia Planitia as part of a joint effort to study the three main basins in the northern lowlands of Mars, i.e. Acidalia, Utopia, and Arcadia Planitiae. The landforms were mapped at full CTX resolution along a 300 km-wide strip from 20°N t...
Article
Full-text available
This work in Utopia Planitia is the first continuous regional mapping of ice-related landforms integrated into an effort to study the three main basins (Arcadia, Acidalia, and Utopia Planitiae) in the northern plains. The distribution and morphotypes of these landforms, SHAllow RADar detections, and crater size-frequency distribution measurements (...
Article
Full-text available
A project of mapping ice-related landforms was undertaken to understand the role of subsurface ice in the northern plains. This work is the first continuous regional mapping from CTX (ConTeXt Camera, 6 m/pixel; Malin et al.,) imagery in Arcadia Planitia along a strip 300 km across stretching from 30°N to 80°N centered on the 170°W line of longitude...
Conference Paper
Modern planetary maps are designed either as stand-alone products or as part of a map series and are commonly distributed in the Portable Document Format (pdf). With the advent of web-based map technology and its standardization, experimental steps towards digital-only and dynamic map display for planetary cartography have been made. Commonly, maps...
Article
Planetary cartography does not only provide an extensive basis for supporting planning activities in planetary exploration, e.g., landing-site selection, orbital observations, traverse planning, but it also supports mission conduct by, e.g., observation tracking and hazard avoidance mapping. It also provides the scientifi c and technical basis to c...
Article
The 90.5-km Occator crater, with its peculiar and unique bright spots, is one of the most prominent and renowned feature on Ceres. Occator attracted broad public attention in scientific media as it is proposed to exhibit signs of post-impact cryovolcanic activity. In order to understand the time sequence of deposition, several attempts were made du...
Chapter
For the structure of this chapter we chose to discuss the terrestrial planets and their satellites in terms of their geological evolution with time. We start with ancient times and end with modern times. Orthogonal to this time line, we describe the processes and their effects acting on each planetary body. Our home planet, Earth, serves as a refer...
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...
Article
Full-text available
Maps are one of the most important tools for communicating geospatial information between producers and receivers. Geospatial data, tools, contributions in geospatial sciences, and the communication of information and transmission of knowledge are matter of ongoing cartographic research. This applies to all topics and objects located on Earth or on...
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...
Chapter
Exploring the Solar system with robotic spacecraft uses a variety of techniques and experiments, ranging from remote sensing, to in-situ measurements and typically culminating in sample return for detailed and thorough analysis on Earth. Remote sensing experiments are related to and sometimes derived from those developed for Earth or astronomical a...
Chapter
Fieldwork is key to geological practice on Earth, as well as ground truth key to Remote sensing data validation. Extraterrestrial fieldwork shares the needs of its terrestrial counterpart with additional challenges due to the harsh, demanding and remote nature of Solar System bodies. The various types of experiments, typically used in planetary exp...
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
Planetary Cartography does not only provides the basis to support planning (e.g., landing-site selection, orbital observations, traverse planning) and to facilitate mission conduct during the lifetime of a mission (e.g., observation tracking and hazard avoidance). It also provides the means to create science products after successful termination of...
Conference Paper
Full-text available
Planetary Cartography does not only provides the basis to support planning (e.g., landing site selection, orbital observations, traverse planning) and to facilitate mission conduct during the lifetime of a mission (e.g., observation tracking and hazard avoidance). It also provides the means to create science products after successful termination of...
Conference Paper
Maps are one of the most important tools for communicating geospatial information between producers and receivers. Geospatial data, tools, contributions in geospatial sciences, and the communication of information and transmission of knowledge are matter of ongoing cartographic research. This applies to all topics and objects located on Earth or on...
Conference Paper
OpenPlanetaryMap is a collaborative effort to build an Open Planetary Mapping and Social platform for space enthusiasts, planetary scientists, educators, and storytellers.
Article
The increased volume, spatial resolution, and areal coverage of high-resolution images of Mars over the past 15 years have led to an increased quantity and variety of small-scale landform identifications. Though many such landforms are too small to represent individually on regional-scale maps, determining their presence or absence across large are...
Conference Paper
OpenPlanetaryMap (OPM) is a new OpenPlanetary [1] project, supported by CARTO [2], to build an Open Planetary Mapping and Social platform for planetary researchers and mappers, space enthusiasts and students, educators and storytellers. Our goal is to enable them to easily and collaboratively create and share location-based knowledge and maps of ot...
Conference Paper
The genesis of the Equatorial light-toned sulfate bearing layered deposits (ELDs) in Arabia Terra has long been debated with many processes/environments proposed (including aeolian, airfall, lacustrine, volcanic, playa, spring deposits and combinations among these, stratigraphic relations with the clay bearing possible fluvial deposits) and differe...
Conference Paper
Full-text available
Quantifying the Influence of Topography-Model-Related Distortions on Cratering Chronologies
Conference Paper
Full-text available
Analysis of Spiders in Inca City, Mars: Spatial Distribution and Types
Conference Paper
Full-text available
"Open" has become attached to several concepts: science, data, and software are some of the most obvious. It is already common practice within the planetary science community to share spacecraft missions data freely and openly [1]. However, this is not historically the case for software tools, source code, and derived data sets, which are often rep...
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...
Article
In den Geowissenschaften werden kartographische Animationen verwendet, um Untersuchungen und Analysen von komplexen Zuständen darzustellen. Durch eine solche Kombination räumlicher und temporaler Daten kann eine sehr hohe Informationsdichte aus verschiedenen Quellen bereitgestellt und kommuniziert werden. Hierfür werden häufig GIS-Technologien verw...
Article
Understanding planetary atmosphere-surface exchange 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 o...
Article
Full-text available
Understanding planetary atmosphere-surface exchange 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 o...
Article
Full-text available
As part of the national space promotion plan and presidential national agendas South Korea’s institutes and agencies under the auspices of the Ministry of Science, Information and Communication Technology and Future Planning (MSIP) are currently developing a lunar mission package expected to reach Moon in 2020. While the officially approved Korean...
Article
Full-text available
As part of the national space promotion plan and presidential national agendas South Korea’s institutes and agencies under the auspices of the Ministry of Science, Information and Communication Technology and Future Planning (MSIP) are currently developing a lunar mission package expected to reach Moon in 2020. While the officially approved Korean...
Article
The exponential increase of acquired and managed geospatial data during the last decades, and the development of new hard- and software Frameworks are two main drivers which have facilitated technological innovation in computer–animated cartography and cartographic animation (CA). In the Earth sciences cartographic animation are used for investigat...
Conference Paper
A considerable increase of surface coverage and the availability and accessibility of planetary data allow researchers and engineers to remotely perform detailed studies on planetary surface processes and properties, in particular on objects such as Mars and the Moon for which Terabytes of multi–temporal data at different spatial resolution levels...
Article
Full-text available
The structural architecture of large volcanoes is governed substantially by gravity-driven deformation that is manifest as distinct processes such as basement flexure or volcanic spreading. Temporal effects and the mutual interplay of these processes have been investigated only to a limited extent, and so we present novel numerical models of the ti...
Article
The High Resolution Stereo Camera (HRSC) of ESA's Mars Express is designed to map and investigate the topography of Mars. The camera, in particular its Super Resolution Channel (SRC), also obtains images of Phobos and Deimos on a regular basis. As HRSC is a push broom scanning instrument with nine CCD line detectors mounted in parallel, its unique...