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  • 1
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    Spectral Investigation of Bioproduction in the Northern Brandenburg Lake District, Germany (1997)
    In:  Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods | Proc. Europto Series-EnviroSense, SPIE-3107
    Details
    Publication Date: 2020-02-12
    Description: The German lake district "Mecklenburger Kleinseenplatte" between Berlin and Rostock shows a great variety of lakes having different trophical states. Remote sensing of water quality is investigated to help monitoring the lake waters and to guide the water sampling more carefully over space and time. Satellite data of the Indian Remote Sensing Satellite of summer 1996 are analysed for a general overview of the variety of lake water within the test area. To get more quantitative information hyperspectral scanner data of the Compact Airborne Spectrographic Imager (casi) are investigated. For these data a ratio of two bands pointing to chlorophyll absorption at 680 nm and a hull function over the absorption band have been applied. The results could be well related to the ground truth data taken by the Institute of Fresh Water Ecology in Brandenburg. They show differences in chlorophyll content even in December, a season of minimal bioproduction. Thus, further research in the summer season is promising to get good results in estimation of water quality parameters.
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/bookPart
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  • 2
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    A new beam profile monitor and time of flight system for CologneAMS (2013)
    In:  Nuclear Instruments and Methods in Physics Research / B
    Details
    Publication Date: 2020-02-12
    Description: A complex beam detector consisting of a high-resolution beam profile monitor (BPM) and a time of flight (TOF) spectrometer with tracking capabilities was designed especially for the special needs of the Cologne center for accelerator mass spectrometry (CologneAMS). The beam detector assembly is designed to match the beam specifications of the 6 MV Tandetron AMS setup and its data acquisition system. It will have a reconfigurable structure, either as a fast TOF subsystem with a ca. 10 cm2 equivalent active area, or as a more complex BPM–TOF detector with beam tracking capabilities and a larger active area (16 cm2). The purpose of this detector is to suppress background during spectrometry of heavy ions (U, Cm, Pu, Am etc.) and to suppress isobaric interferences such as 36S in 36Cl spectra.
    Keywords: 550 - Earth sciences
    Type: info:eu-repo/semantics/article
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