(Article of periodic en Anglais - 2009)

Document title

A minimum sample size required from Schmidt hammer measurements

Authors(s) and Affiliation(s)

NIEDZIELSKI T. (1 2) ; MIGOŃ P. (1) ; PLACEK A. (1) ;
(1) Dep. of Geomorphology, Inst. of Geography and Regional Development, Univ., Wrocław, POLOGNE
(2) Space Research Centre, Polish Academy of Sciences, Warsaw, POLOGNE


The AA. show a simple statistical method, based on the two-sample Student’s t-test, to objectively estimate the minimum number of rebound measurements. They present the results as (1) the ‘mean’ and ‘median’ solutions, each providing a single estimate value, and (2) the empirical probability distribution of such estimates based on many field samples. Schmidt hammer data for 14 lithologies, 13–81 samples for each, with each sample consisting of 40 individual readings, have been evaluated, assuming different significance levels. Principal recommendations are given : recommended minimum sample size and required number of readings at a site


Article of periodic

published at : Earth surface processes and landforms / ISSN 0197-9337 / CODEN ESPLDB

Editor : Wiley, Chichester - ROYAUME-UNI (1981)

Millesime : 2009, vol. 34, no13 [pp. 1713-1725]

Bibliographic references : 34 ref.

Collation : 6 fig., 3 tabl.



INIST-CNRS, Cote INIST : 17355

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1002/esp.1851

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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