A5026776086- Cryospheric studies and observations
- Climate change and permafrost
- Landslides and related hazards
- Winter Sports Injuries and Performance
- Digitalization, Law, and Regulation
- Medical and Health Sciences Research
- Public Administration and Political Analysis
- Remote Sensing and LiDAR Applications
- 3D Surveying and Cultural Heritage
- Law and Political Science
- Arctic and Antarctic ice dynamics
- Species Distribution and Climate Change
- Hydrology and Watershed Management Studies
- Robotics and Sensor-Based Localization
- Geophysics and Gravity Measurements
- Meteorological Phenomena and Simulations
- Advanced Vision and Imaging
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Advanced Optical Sensing Technologies
- Fire effects on ecosystems
- Remote Sensing and Land Use
- Criminal Law and Policy
- German Literature and Culture Studies
- Geology and Paleoclimatology Research
- Sports Science and Education
Universität Innsbruck
2015-2024
Institute of Computer Vision and Applied Computer Sciences
2020
VRVis GmbH (Austria)
2018-2019
Graz University of Technology
2017
A permanently installed terrestrial laser scanner (TLS) helps to investigate surface changes at high spatio-temporal resolution. Previous studies show that the annual and seasonal glacier volume, subsequently mass balance, can be measured by TLSs. This study systematically identifies quantifies uncertainties their sources of permanent long-range TLS system Hintereisferner (Ötztal Alps, Austria) in order assess its potential limitations for detecting glaciologically relevant small-scale...
Abstract. This study presents a reanalysis of the glaciologically obtained annual glacier mass balances at Hintereisferner, Ötztal Alps, Austria, for period 2001–2011. The is accomplished through comparison with geodetically derived changes, using high-resolution airborne laser scanning (ALS). grid-based adjustments method-inherent differences are discussed along associated uncertainties and discrepancies two methods balance measurements. A statistical datasets shows no significant...
Abstract. This study investigates rock glacier destabilization based on the results of a unique in situ and remote-sensing-based monitoring network focused kinematics Äußeres Hochebenkar (Austrian Alps). We consolidate, homogenize, extend existing time series to generate comprehensive dataset consisting 14 digital surface models covering 68-year period, as well measurements block displacement since early 1950s. The are derived from historical aerial imagery and, more recently, airborne...
Abstract. A terrestrial laser scanner (TLS) of the type RIEGL VZ-6000 has been permanently installed and automated at Hintereisferner glacier located in Ötztal Alps, Austria, to identify snow (re)distribution from surface height changes. first case study is presented that shows discusses detected distribution after a snowfall event, together with concurrent erosion deposition caused by avalanches. The paper potential TLS system high mountain environment, which also applicable other...
Abstract. Observations of glacier mass changes are key to understanding the response glaciers climate change and related impacts, such as regional runoff, ecosystem changes, global sea level rise. Spaceborne optical radar sensors make it possible quantify elevation thus multi-annual on a scale. However, estimates from growing number studies show wide range results with differences often beyond uncertainty bounds. Here, we present outcome community-based inter-comparison experiment using...
This study aims at developing and applying a spatially-distributed coupled glacier mass balance ice-flow model to attribute the response of glaciers natural anthropogenic climate change. The includes novel formulation Shallow Ice Approximation that does not require priori information about flowline geometry glaciers. We focus on two contrasting glaciers: debris-covered (Langtang Glacier in Nepal) clean-ice (Hintereisferner Austria). is applied from end Little Age (1850) present-day (2016)...
This study evaluates the potential of using high-resolution remote sensing data to detect permafrost patterns in a recently deglaciated alpine area on mountain ridge 'Rofenberg', Tyrol, Austria. Here, small but continuous settling surface was detected differential digital terrain models throughout an annual airborne laser scanning (ALS) series (2001–11). The is hypothesised result from thawing perennially frozen ground. To test this hypothesis, we applied combination established methods...
In this study, we use Pléiades tri-stereo data to generate a digital elevation model (DEM) from the images using workflow employing semi-global matching (SGM). We examine DEM accuracy in complex mountain glaciated terrain by comparing new DEMs with an independent high-quality based on airborne laser scanning (ALS) for study area Austrian Alps, and ground control points Khumbu Himal of Nepal. The derived SGM algorithm compare well ALS DEM, produces models sufficient quality resolve points,...
Abstract. Records of glacier mass balance represent important data in climate science and their uncertainties affect calculations sea level rise other societally relevant environmental projections. In order to reduce quantify series obtained by direct glaciological measurements, we present a detailed reanalysis workflow which was applied the 10-year record (2004 2013) seasonal Langenferner, small European Eastern Alps. The approach involves methodological homogenization available point...
Little is known about the thickness of active Alpine rock glaciers, yet they are important components local hydrology. We use GPR data to determine depth bedrock Äußeres Hochebenkar glacier (Austria). There no detailed information available regarding density and composition glacier, assumptions signal propagation velocity have be made when processing data. a simple creep model based on surface displacement slope calculate along flow line. calculated profiles line for three different time...
Nowadays, several sensors are capable of acquiring very high resolution (VHR) satellite images in stereo, and even tri-stereo mode. These data can be efficiently exploited with photogrammetric methods, such as semi-global matching (SGM), to produce quality 2.5D digital terrain information. Regarding the production models, since VHR (tri-)stereo available at temporal frequencies for nearly whole globe, they considered an attractive alternative restricted expensive airborne laserscanning (ALS)...
The systematic monitoring of glaciers is essential to both evaluate water resources availability and better understand the effects climate change. increased speed glacier changes observed in last years requires a more frequent update inventories than past; however, high human supervision required by state-of-the-art techniques discouraging their application over large areas. This paper proposes novel approach exploit volume data provided Copernicus Sentinel missions for detecting outlines,...
Abstract. With full-waveform (FWF) lidar systems becoming increasingly available from different commercial manufacturers, the possibility for extracting physical parameters of scanned surfaces in an area-wide sense, as addendum to their geometric representation, has risen well. The mentioned FWF digitize temporal profiles transmitted laser pulse and its backscattered echoes, allowing a reliable determination target distance instrument quantities by means radiometric calibration, one such...
<p>Glaciers represent an important part of the hydrologic cycle in Alps and they are very sensitive to climate change. Satellite remote sensing is efficient tool for glacier monitoring because it provides a synoptic view over large areas. In literature, well-established methods delineation based on Red Short Wave Infrared (SWIR) ratio have been presented. These depend manual selection each “best scene”, i.e. absence cloud coverage minimum snow cover....
Abstract. This study presents a reanalysis of the glaciologically obtained 2001–11 annual glacier mass balances record at Hintereisferner, Ötztal Alps, Austria. The is accomplished through comparison with geodetically derived changes, using high-resolution airborne laser scanning (ALS). grid based adjustments for method-inherent differences are discussed along associated uncertainties and discrepancies two forms balance measurements. A statistical datasets shows no significant difference...
The design of interactive algorithms for robotic total stations often requires hardware-in-the-Ioop setups during software development and verification. use real-time simulation can reduce the test effort significantly. However, analysis uncertainty is crucial proper interpretation results. In this paper, we present a method modern stations. We provide details an exemplary station including models geometry, actuators sensors. was estimated analytically verified by Monte Carlo experiments.
Abstract. Observations of glacier mass changes are key to understanding the response glaciers climate change and related impacts, such as regional runoff, ecosystem changes, global sea-level rise. Spaceborne optical radar sensors make it possible quantify elevation thus multi-annual on a scale. However, estimates from growing number studies show wide range results with differences often beyond uncertainty bounds. Here, we present outcome community-based inter-comparison experiment using...
Abstract. This study investigates rock glacier destabilization based on the results of a unique in situ and remote sensing-based monitoring network focused kinematics Äußeres Hochebenkar (Austrian Alps). We consolidate, homogenize, extend existing time series to generate comprehensive dataset consisting 14 digital surface models covering 68 year period, as well measurements block displacement since early 1950s. The are derived from historical aerial imagery and, more recently, airborne...