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Title:

RELATIONSHIPS BETWEEN THE DAILY TEMPERATURE WAVE AND THE DEVELOPMENT OF THE NATURAL SOIL PROFILE

Accession Number:

00237755

Record Type:

Component

Abstract:

MORAINES ARE INVESTIGATED WHICH ARE MIXTURES OF CALCAREOUS AND SILICEOUS MATERIALS. THE FIRST PHASE OF SOLUTION WEATHERING IS A DECALCIFICATION. THE REMNANT IS A COLLOIDAL CLAYEY SUBSTANCE THAT IN TEMPERATE CLIMATES IS AT FIRST QUITE MOBILE. THIS SUBSTANCE CHARACTERIZES THE FUNDAMENTAL PROCESS OF SOIL FORMATION THAT IS OF SPECIAL INTEREST IN THIS CONNECTION: THE LESSIVAGE OR CLAY PERMEATION. THE REGULARITY IN THE VARIATION OF SOIL DEVELOPMENT WITH VARIATION IN EXPOSURE CONDITION, AND THE CONSTANCY OF THE BOUNDARY BETWEEN THE UPPER AND LOWER SOIL HORIZONS AT ABOUT 40 CM, RENDER PAIRS OF OPPOSITE DRUMLIN FLANKS FAVORABLE OBJECTS FOR THE STUDY OF THE INFLUENCE OF THE COURSE OF SOIL TEMPERATURE ON SOIL FORMATION. FOR THIS PURPOSE A FOREST-FREE DRUMLIN, NAMED THE WALZENBERG, LOCATED AT THE VILLAGE BOUNDARY OF ALLENSBACH, WAS CHOSEN. THE MICROCLIMATIC INVESTIGATIONS ARE BASED ON THE FOLLOWING CONDITIONS: (1) THE TWO TEST AREAS ARE SITUATED AT AN ELEVATION OF 450 AND 500 M ABOVE SEA LEVEL, IN THE UPPER THIRD OF THE UNFORESTED DRUMLIN, SLOPES OF AN AVERAGE SLOPE ANGLE OF 20 DEGREES TOWARD SOUTHWEST-SOUTH AND NORTHEAST-NORTH, RESPECTIVELY, (2) THE ARTIFICIAL FILLING OF RAW LIME-RICH MORAINE MATERIAL HAS A SINGLE-GRAIN STRUCTURE OF GOOD PERMEABILITY, AND IS NONPLASTIC AND HARDLY SUSCEPTIBLE TO EROSION, AND (3) THE SURFACES OF THE ARTIFICIAL SOIL FILLS WERE FITTED TO THE NATURAL SLOPE AND WERE KEPT CONTINUOUSLY FREE OF VEGETATION. THE FOLLOWING MICROCLIMATIC FACTORS WERE DETERMINED: (1) SOIL TEMPERATURES AT DEPTHS OF 2, 5, 10, 20, 35, 50, 75 AND 100 CM BY CONTINUOUS MECHANICAL RECORDING, (2) PRECIPITATION AND SEEPAGE WATER, AND (3) DRAINAGE. THESE INVESTIGATIONS OF SOIL TEMPERATURES ON BOTH SLOPES OF THE WALZENBERG PRODUCED THE FOLLOWING PRELIMINARY RESULTS:(1) ANALYSIS OF THE 4 GEOTHERM FIELDS RENDERED A GIVEN THERMAL PROFILE, (2) WITH THE AID OF TAUTOCHRONES, A DIVISION INTO 3 PARTS WAS VISUALIZED: THE FANNING OUT OF THE TAUTOCHRONES IN THE ACTIVE UPPER ZONE, THE BOUNDARY LAYER WITH THE LOCALIZED TEMPERATURE INVERSION DURING THE NIGHT HOURS, AND THE ALIGNMENT OF THE TAUTOCHRONES IN THE SAME DIRECTION IN THE PASSIVE LOWER ZONE, AND (3) THE OVERVIEW OBTAINED WITH REGARD TO THE COURSE OF SOIL TEMPERATURES DURING THE GROWING SEASON BY MEANS OF SELECTED TAUTOCHRONE PAIRS LEADS TO THE RECOGNITION OF SUBDIVISIONS THAT ARE FUNCTIONS OF TIME.

Supplemental Notes:

Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

Monograph Accession #:

01410773

Corporate Authors:

Highway Research Board (HRB)

Washington, DC

Authors:

Goetz, R
MULLER, S

Pagination:

pp 51-65

Publication Date:

1969

Serial:

Highway Research Board Special Report

Issue Number: 103
Publisher: Highway Research Board

Conference:

Proceedings of an International Conference Held at Washington, D.C., January 16 1969 With the Support of the National Science Foundation

Location: Washington DC, United States
Date: 1969-1-16 to 1969-1-16
Sponsors: National Research Council; National Science Foundation

Media Type:

Digital/other

Features:

Figures (11) ; References (23)

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways

Files:

TRIS, TRB, ATRI

Created Date:

Aug 25 1994 12:00AM

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