The Schmidt hammer, weathering and rock surface roughness
Here, careful measurement of the influence of weathering on rock surface texture is used to elucidate the relationships between weathering, roughness and Schmidt hammer rebound values.
Measurement and calibration of weathering, using the Schmidt hammer, on wave washed moraines on the Upper Norrland Coast, Sweden
This paper presents the method used by the AA., exemplified by Schmidt hammer measurements on a raised boulder-beach in the Nordringa region on the Bothnian Bay coast, and some implications of the method. Several archaeological applications are also
Evaluating the Schmidt hammer as a method for distinguishing the relative age of late Holocene moraines : Svellnosbreen, Jotunheimen, Norway
Dating ; Holocene ; Little ice age ; Moraine ; Norway ; Quaternary ; Relative dating ; Schmidt hammer ; Southern Norway
The AA. used the Schmidt hammer to assess the relative exposure ages of previously dated Little Ice Age moraines deposited by Svellnosbreen glacier in Jotunheimen southern Norway. Schmidt hammer measurements were taken on moraine surfaces which have
been deglaciated for 79–259 years since the Little Ice Age, to reconstruct and date previous snout positions. Dating used a typical linear Little Ice Age age-calibration curve and the ages of unknown surfaces were predicted based on Schmidt hammer
measurements with the support of lichenometric dates. Calibrated ages exhibited potential dating errors of 63-103 years years, which were estimated using 95% confidence intervals associated with two control points based on moraines of known ages. Schmidt hammer
Disequilibrium and dynamics in metropolitan economic development in the Third World: reply to Townroe and Hamer
Voir aussi: STORPER (M.): Who benefits from industrial decentralization? Regional Studies, U. K, 1984, 18, n 2, 143-164 et TOWNROE (P. M.), HAMER (A. M.): Who benefits from industrial decentralization? Regional Studies, U. K, 1984, 18, n 4, 339-344.
An evaluation of surface hardness of natural and modified rocks using Schmidt hammer : study from northwestern Himalaya, India
Four rock types (quartz mica gneiss, schist, quartzite and calc-silicate) located in the Satluj and Alaknanda valleys were used to test whether a Schmidt hammer can be used to distinguish rock surfaces affected by various natural and man-induced
processes like manual smoothing of rock surfaces by grindstone, surface weathering, deep weathering, fluvial polishing and blasting during road construction. Discussion of the Schmidt hammer rebound values, R-Values, and the unconfined compressive strength
1489 ; Amérique ; Carte ancienne ; Découverte ; Géographie historique ; Hammer, Henri ; Histoire de la géographie ; Martello, Enrico
Interprétation nouvelle du planisphère d'Enrico Martello (Henri Hammer), 1489, sur lequel l'argentin Pablo Gallez, croit discerner le tracé de l'Amérique du sud. Cette hypothèse qui tend à révolutionner l'histoire des grandes découvertes paraît être