Search Results - "Mall, Urs"
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Impacts drive lunar rockfalls over billions of years
Published in Nature communications (08-06-2020)“…Past exploration missions have revealed that the lunar topography is eroded through mass wasting processes such as rockfalls and other types of landslides,…”
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Elemental and molecular abundances in comet 67P/Churyumov-Gerasimenko
Published in Monthly notices of the Royal Astronomical Society (11-10-2019)“…ABSTRACT Comets are considered to be some of the most pristine and unprocessed Solar system objects accessible to in situ exploration. Investigating their…”
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Change of outgassing pattern of 67P/Churyumov–Gerasimenko during the March 2016 equinox as seen by ROSINA
Published in Monthly notices of the Royal Astronomical Society (01-07-2017)“…Abstract As the spin axis of comet 67P/Churyumov–Gerasimenko (67P) is not normal to the orbital plane, 67P has strong seasonal changes in the illumination…”
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Prebiotic chemicals-amino acid and phosphorus-in the coma of comet 67P/Churyumov-Gerasimenko
Published in Science advances (01-05-2016)“…The importance of comets for the origin of life on Earth has been advocated for many decades. Amino acids are key ingredients in chemistry, leading to life as…”
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Artificial intelligence in remote sensing geomorphology—a critical study
Published in Frontiers in astronomy and space sciences (30-11-2023)“…Planetary geomorphological maps over a wide range of spatial and temporal scales provide important information on landforms and their evolution. The process of…”
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Deep Learning-Driven Detection and Mapping of Rockfalls on Mars
Published in IEEE journal of selected topics in applied earth observations and remote sensing (2020)“…The analysis of rockfall distribution and magnitude is a useful tool to study the past and current endogenic and exogenic activity of Mars. At the same time,…”
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Evidence for distributed gas sources of hydrogen halides in the coma of comet 67P/Churyumov–Gerasimenko
Published in Monthly notices of the Royal Astronomical Society (01-07-2017)“…Abstract Rosetta has detected the presence of the hydrogen halides HF, HCl, and HBr in the coma of comet 67P/Churyumov–Gerasimenko. These species are known to…”
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Detection of argon in the coma of comet 67P/Churyumov-Gerasimenko
Published in Science advances (01-09-2015)“…Comets have been considered to be representative of icy planetesimals that may have contributed a significant fraction of the volatile inventory of the…”
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An in-depth look at the lunar crater Copernicus: Exposed mineralogy by high-resolution near-infrared spectroscopy
Published in Icarus (New York, N.Y. 1962) (01-05-2011)“…► We present an in-depth study of Copernicus crater. ► First publication based on new NIR data from the SIR-2 mission to the Moon. ► New NIR spectral…”
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Multispectral polarimetry as a tool to investigate texture and chemistry of lunar regolith particles
Published in Icarus (New York, N.Y. 1962) (01-04-2007)“…We report results of telescope polarimetric imaging of the Moon with a CCD LineScan Camera at large phase angles, near 88°. This allows measurements of the…”
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Automated Detection of Lunar Rockfalls Using a Convolutional Neural Network
Published in IEEE transactions on geoscience and remote sensing (01-06-2019)“…This paper implements a novel approach to automatically detect and classify rockfalls in Lunar Reconnaissance Orbiter narrow angle camera (NAC) images using a…”
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Applying machine learning to a nonlinear spectral mixing model for mapping lunar soils composition using CHANDRAYAAN-1 M3 data
Published in Planetary and space science (01-05-2024)“…We present a newly developed method which combines the nonlinear spectral mixing model of Shkuratov et al. (1999) with a machine learning algorithm to map the…”
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13
Lunar spinels in the Aristarchus crater and cobra head
Published in Planetary and space science (01-01-2024)“…On the lunar surface we identify and map Mg-spinel-bearing deposits on the southern section of the Aristarchus Plateau, including the Aristarchus and Herodotus…”
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Near Infrared Reflectance Spectrometry in Planetary Space Exploration
Published in NIR news (01-02-2016)Get full text
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15
67P/Churyumov-Gerasimenko, a Jupiter family comet with a high D/H ratio
Published in Science (American Association for the Advancement of Science) (23-01-2015)“…The provenance of water and organic compounds on Earth and other terrestrial planets has been discussed for a long time without reaching a consensus. One of…”
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Integrated topographic, photometric and spectral analysis of the lunar surface: Application to impact melt flows and ponds
Published in Icarus (New York, N.Y. 1962) (01-06-2014)“…•Topographic, photometric and spectral analysis of lunar impact melt deposits.•Construction of elemental abundance maps (Fe, Mg, Ca).•Identification of melt…”
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Using LROC WAC data for Lunar surface photoclinometry
Published in Planetary and space science (01-10-2018)“…All available lunar digital elevation models, e.g., SELENE LALT DEM, SELENE DTM LISM, Chang’E-1 LAM DEM, GLD100, SLDEM2015, have certain disadvantages,…”
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Deciphering cometary outbursts: linking gas composition changes to trigger mechanisms
Published in Monthly notices of the Royal Astronomical Society (18-03-2024)“…ABSTRACT Dust and gas outbursts are recurrent cometary phenomena, playing a crucial role in shaping the coma. Proposed outburst trigger mechanisms include…”
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Halogens as tracers of protosolar nebula material in comet 67P/Churyumov–Gerasimenko
Published in Monthly notices of the Royal Astronomical Society (01-12-2017)“…Abstract We report the first in situ detection of halogens in a cometary coma, that of 67P/Churyumov-Gerasimenko. Neutral gas mass spectra collected by the…”
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Interpreting spectral unmixing coefficients: From spectral weights to mass fractions
Published in Icarus (New York, N.Y. 1962) (01-01-2018)“…•Analysis of reflectance spectra of mineral mixtures and minerals.•Quantification of mixing coefficients and conversion to mass fraction.•Novel spectral…”
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