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95 results on '"Arnold, Gabriele E."'

4. Evaluating the performance of the MErcury Radiometer and Thermal Infrared imaging Spectrometer (MERTIS) after the Moon and the first Venus flyby

Author

Helbert, Jörn, primary, D'Amore, Mario, additional, Maturilli, Alessandro, additional, Peter, Gisbert, additional, Säuberlich, Thomas, additional, Ulmer, Bernd, additional, Knollenberg, Jörg, additional, Varatharajan, Indhu, additional, Bauch, Karin, additional, Wohlfarth, Kay, additional, Wöhler, Christian, additional, Schmedemann, Nico, additional, Arnold, Gabriele E., additional, Haus, Rainer, additional, and Hiesinger, Harald, additional

Published
2021
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6. Advanced Hyperspectral Analysis of Sediment Core Samples from the Chew Bahir Basin, Ethiopian Rift, in the Spectral Range from 0.25 to 17 mu m: Support for Climate Proxy Interpretation

Author

Arnold, Gabriele E., Foerster, Verena, Trauth, Martin H., Lamb, Henry, Schaebitz, Frank, Asrat, Asfawossen, Szczech, Claudia, Gunter, Christina, Arnold, Gabriele E., Foerster, Verena, Trauth, Martin H., Lamb, Henry, Schaebitz, Frank, Asrat, Asfawossen, Szczech, Claudia, and Gunter, Christina

Abstract

Establishing robust environmental proxies at newly investigated terrestrial sedimentary archives is a challenge, because straightforward climate reconstructions can be hampered by the complex relationship between climate parameters and sediment composition, proxy preservation or (in)sufficient sample material. We present a minimally invasive hyperspectral bidirectional reflectance analysis on discrete samples in the wavelength range from 0.25 to 17 mu m on 35 lacustrine sediment core samples from the Chew Bahir Basin, southern Ethiopia for climate proxy studies. We identified and used absorption bands at 2.2 mu m (Al-OH), at 2.3 mu m (Mg-OH), at 1.16 mu m (analcime), and at 3.98 mu m (calcite) for quantitative spectral analysis. The band depth ratios at 2.3/2.2 mu m in the spectra correlate with variations in the potassium content of the sediment samples, which also reflect periods of increased Al-to-Mg substitution in clay minerals during drier climatic episodes. During these episodes of drier conditions, absorption bands diagnostic of the presence of analcime and calcite support this interpretation, with analcime indicating the driest conditions. These results could be compared to qualitative analysis of other characteristic spectral properties in the spectral range between 0.25 and 17 mu m. The results of the hyperspectral measurements complement previous sedimentological and geochemical analyses, allowing us in particular to resolve more finely the processes of weathering in the catchment and low-temperature authigenic processes in the sediment. This enables us to better understand environmental changes in the habitat of early humans.

Published
2021

11. ACS/TIRVIM: Calibration and first results

Author

Shakun, Alexey, primary, Luginin, Michail, primary, Maturilli, Alessandro, primary, Grassi, Davide, primary, Ignatiev, Nikolay, primary, Grigoriev, Alexey, primary, Moshkin, Boris, primary, Korablev, Oleg, primary, Arnold, Gabriele E., primary, Kungurov, Andrey, primary, Makarov, Vladislav, primary, Martynovich, Fedor, primary, Maslov, Igor, primary, Merzlyakov, Dmitry, primary, Nikolskiy, Yuri, primary, Patsaev, Dmitry, primary, Santos-Skripko, Aleksandr, primary, Sazonov, Oleg, primary, Shashkin, Viktor, primary, Stupin, Igor, primary, and Zharkov, Alexander, primary

Published
2018
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12. The Venus Emissivity Mapper (VEM): obtaining global mineralogy of Venus from orbit

Author

Helbert, Jörn, primary, Dyar, Melinda D., primary, Widemann, Thomas, primary, Marcq, Emmanuel, primary, Walter, Ingo, primary, Guignan, Gabriel, primary, Wendler, Dennis, primary, Mueller, Nils, primary, Kappel, David, primary, Arnold, Gabriele E., primary, D'Amore, Mario, primary, Maturilli, Alessandro, primary, Ferrari, Sabrina, primary, Tsang, Constantine, primary, Börner, Anko, primary, Jaenchen, Judit, primary, and Smrekar, Suzanne E., primary

Published
2018
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13. Mapping Trojan asteroids in the thermal infrared with TROTIS

Author

Helbert, Jörn, primary, Börner, Anko, primary, Maturilli, Alessandro, primary, D'Amore, Mario, primary, Grott, Matthias, primary, Knollenberg, Jörg, primary, Arnold, Gabriele E., primary, Palomba, Ernesto, primary, Okada, Tatsuaki, primary, Vernazza, Pierre, primary, Rivkin, Andrew, primary, Varatharajan, Indhu, primary, Walter, Ingo, primary, Säuberlich, Thomas, primary, and Peter, Gisbert, primary

Published
2018
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16. The Venus Emissivity Mapper (VEM) concept

Author

Helbert, Joern, Wendler, Dennis, Walter, Ingo, Widemann, Thomas, Marcq, Emmanuel, Ferrari, Sabrina, Maturilli, Alessandro, Mueller, Nils, Jaenchen, Judit, Kappel, David, Boerner, Anko, D'Amore, Mario, Darby Dyar, M., Arnold, Gabriele E., Smrekar, Suzanne E., DLR Institut für Planetenforschung, Deutsches Zentrum für Luft- und Raumfahrt [Berlin] (DLR), DLR Institute of Optical Sensor Systems, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), PLANETO - LATMOS, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Dipartimento di Scienze della Terra e dell'Ambiente [Pavia], Università degli Studi di Pavia = University of Pavia (UNIPV), Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Deutsches Zentrum für Luft- und Raumfahrt (DLR), Department of Astronomy of the Mount Holyoke College, Mount Holyoke College, DLR Institute for Optical Sensorsystems, Università degli Studi di Pavia, and California Institute of Technology (CALTECH)-NASA

Subjects
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
Abstract

International audience; Based on experience gained from using the VIRTIS instrument on Venus Express to observe the surface of Venus and the new high temperature laboratory experiments, we have developed the multi-spectral Venus Emissivity Mapper (VEM) to study the surface of Venus. VEM imposes minimal requirements on the spacecraft and mission design and can therefore be added to any future Venus mission. Ideally, the VEM instrument will be combined with a high-resolution radar mapper to provide accurate topographic information, as it will be the case for the NASA Discovery VERITAS mission or the ESA EnVision M5 proposal.

Published
2016

18. The Venus Emissivity Mapper concept

Author

Helbert, Joern, primary, Arnold, Gabriele E., primary, Walter, Ingo, primary, Wendler, Dennis, primary, Widemann, Thomas, primary, Guignan, Gabriel, primary, Marcq, Emmanuel, primary, Börner, Anko, primary, Jänchen, Judit, primary, Maturilli, Alessandro, primary, Kappel, David, primary, Dyar, Darby, primary, Ferrari, Sabrina, primary, Mueller, Nils, primary, D'Amore, Mario, primary, and Smrekar, Suzanne, primary

Published
2017
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23. The Venus Emissivity Mapper Concept

Author

Strojnik, Marija, Helbert, Joern, Wendler, Dennis, Walter, Ingo, Widemann, Thomas, Marcq, Emmanuel, Guignan, Gabriel, Ferrari, Sabrina, Maturilli, Alessandro, Mueller, Nils, Kappel, David, Jaenchen, Judit, D'Amore, Mario, Boerner, Anko, Dyar, Darby, Arnold, Gabriele E., Smrekar, Suzanne, Strojnik, Marija, Helbert, Joern, Wendler, Dennis, Walter, Ingo, Widemann, Thomas, Marcq, Emmanuel, Guignan, Gabriel, Ferrari, Sabrina, Maturilli, Alessandro, Mueller, Nils, Kappel, David, Jaenchen, Judit, D'Amore, Mario, Boerner, Anko, Dyar, Darby, Arnold, Gabriele E., and Smrekar, Suzanne

Abstract

Based on experience gained from using the VIRTIS instrument on Venus Express to observe the surface of Venus and the new high temperature laboratory experiments, we have developed the multispectral Venus Emissivity Mapper (VEM) to study the surface of Venus. VEM imposes minimal requirements on the spacecraft and mission design and can therefore be added to any future Venus mission. Ideally, the VEM instrument will be combined with a high-resolution radar mapper to provide accurate topographic information, as it will be the case for the NASA Discovery VERITAS mission or the ESA EnVision M5 proposal.

Published
2016

25. The Venus Emissivity Mapper (VEM) concept

Author

Helbert, Joern, additional, Wendler, Dennis, additional, Walter, Ingo, additional, Widemann, Thomas, additional, Marcq, Emmanuel, additional, Guignan, Gabriel, additional, Ferrari, Sabrina, additional, Maturilli, Alessandro, additional, Mueller, Nils, additional, Kappel, David, additional, Jaenchen, Judit, additional, D'Amore, Mario, additional, Boerner, Anko, additional, Dyar, Darby, additional, Arnold, Gabriele E., additional, and Smrekar, Suzanne, additional

Published
2016
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26. The Venus Emissivity Mapper Concept.

Author

Helbert, Joern, Waltera, Ingo, Wendlera, Dennis, Widemann, Thomas, Marcq, Emmanuel, Guignan, Gabriel, Ferrari, Sabrina, Maturilli, Alessandro, Mueller, Nils, Kappel, David, Jaenchen, Judit, D'Amore, Mario, Boerner, Anko, Dyar, Darby, Arnold, Gabriele E., and Smrekar, Suzanne

Published
2017
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34. SIMBIO-SYS Near Earth Commissioning Phase: a step forward toward Mercury

Author

Strojnik, Marija, Arnold, Gabriele E., Zusi, M., Simioni, E. T., Cicchetti, A., Politi, R., Noschese, R., Carlier, V., Da Deppo, V., Filacchione, G., Re, C., Tommasi, L., Debei, S., Fonte, S., Langevin, Y., Slemer, A., Baroni, M., Borelli, D., Dami, M., Veltroni, I. Ficai, Amoroso, M., Longo, F., Mugnuolo, R., Capaccioni, F., Capria, M. T., Palumbo, P., Vincendon, M., and Cremonese, G.

Published
2019
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