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Patzelt, Gernot; Schneider, E; Moser, G (1984): Map of Lewis-Glacier - Mt. Kenya 1983 (pdf 600 kB). PANGAEA,, Supplement to: Patzelt, G et al. (1984): Der Lewis-Gletscher, Mount Kenya Begleitworte zur Gletscherkarte 1983. Zeitschrift für Gletscherkunde und Glazialgeologie, 20, 177-195, hdl:10013/epic.42903.d002

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In February of 1983 a new terrestrial photogrammetric survey of Lewis Glacier (0° 9' S) has been made, from which the present topographic map has been produced in a scale of 1:5000. Simultaneously a survey of 1963 was evaluated giving a basis for computations of area and volume changes over the 20 year period: Lewis Glacier has lost 22 % of its area and 50 % of its volume. Based on maps and field observations of moraines 10 different stages were identified. Changes of area and volume can be determined for the periods after 1890, two older, undated stages are presumed to be of Little Ice Age-origin. Moderate losses from 1890 to 1920 were followed by strong, uninterrupted retreat up to present. In this respect Lewis Glacier behaves as all other equatorial glaciers that were closer examined. Compared to alpine glaciers the development was similar up to 1950. In the following years, however, the glaciers of the Alps gained mass and advanced while Lewis Glacier experienced its strongest losses from 1974 to 1983.
Latitude: -0.150000 * Longitude: 37.310000
Minimum Elevation: 4870.0 m * Maximum Elevation: 4870.0 m
Lewis_Glacier * Latitude: -0.150000 * Longitude: 37.310000 * Elevation: 4870.0 m * Recovery: 13.4 m * Location: Mt. Kenya, Kenya, Africa * Campaign: Ice_core_diverse * Basis: Sampling/drilling ice
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