GeologyRocks

Slingram interpretation is a new term for me!

A quick search of Web Of Science produced 4 results (see below). Hope these are useful.

Record 1 of 4
Author(s): Guerin, R; Munoz, ML; Aran, C; Laperrelle, C; Hidra, M; Drouart, E; Grellier, S

Title: Leachate recirculation: moisture content assessment by means of a geophysical technique

Source: WASTE MANAGEMENT, 24 (8): 785-794 2004

Abstract: Bioreactor technology is a waste treatment concept consisting in speeding up the biodegradation of landfilled waste by optimizing its moisture content through leachate recirculation. The measurement of variations in waste moisture content is critical in the design and control of bioreactors. Conventional methods such as direct physical sampling of waste reach their limits due to the interference with the waste matrix. This paper reviews geophysical measurements such as electrical direct current and electromagnetic slingram methods for measuring the electrical conductivity. Electrical conductivity is a property, which is linked to both moisture and temperature and can provide useful indications on the biodegradation environment in the waste mass.
The study reviews three site experiments: a first experimentation shows the advantages (correlation between conductive anomaly and water seepage) but also the limits of geophysical interpretation; the two other sites allow the leachate recirculation to be tracked by studying the relative resistivity variation versus time from electrical 2D imaging.
Even if some improvements are necessary to consider geophysical measurements as a real bioreactor monitoring tool, results are promising and could lead to the use of electrical 2D imaging in bioreactor designing. (C) 2004 Elsevier Ltd. All rights reserved.
ISSN: 0956-053X

Record 2 of 4
Author(s): Persson, K; Olofsson, B

Title: Inside a mound: Applied geophysics in archaeological prospecting at the Kings' Mounds, Gamla Uppsala, Sweden

Source: JOURNAL OF ARCHAEOLOGICAL SCIENCE, 31 (5): 551-562 MAY 2004

Abstract: A combined geophysical prospection with slingram, gradiometer and ground-penetrating radar is described. The prospection is carried out at the Eastern Mound and the Thing Mound, Gamla Uppsala, Middle Sweden in an attempt to detect the internal structure of the mounds. At the Eastern Mound we were able to identify the fossil ground surface, a centre cairn, a possible older grave under the mound and a few other anomalies, some of them most possibly depending on historical activities and some more likely on prehistoric, human activities. The Thing Mound was found being of geological origin and only prepared to become a grave. The project shows that a combined use of several geophysical methods improves and simplifies the interpretation. (C) 2003 Elsevier Ltd. All rights reserved.
ISSN: 0305-4403

Record 3 of 4

Author(s): Aubry, L; Benech, C; Marmet, E; Hesse, A

Title: Recent achievements and trends of research for geophysical prospection of archaeological sites

Source: JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 247 (3): 621-628 MAR 2001

Abstract: Our times are characterized by an increasing need for prospection particularly within the context of rescue archaeology. Geophysics has an important part to play due to its ability to identify some well defined targets as well as to investigate large areas. Several recent surveys, using carefully selected methods chosen in accordance with the type of expected remain or a combination of methods in order to refine or confirm the interpretation, have demonstrated the expertise of several organisations in a wide variety of archaeological contexts. However, important improvements are still to be expected from the laboratories. Our team, working within the framework of three dissertations; is investigating several original subjects, for which the initial results are presented and discussed here: (1) The use of magnetic susceptibility measurements on wide mesh grids in order to survey extensive areas immediately prior to their occupation or destruction by large modem equipment: (2) Experiments to test a new survey device (Slingram - CS150) able to measure the magnetic susceptibility of the ground; (3) Interpretation of a series of geophysical measurements integrated with other types of data into a G.I.S.
ISSN: 0236-5731

Record 4 of 4

Author(s): Guerin, R; Meheni, Y; Rakotondrasoa, G; Tabbagh, A

Title: Interpretation of slingram conductivity mapping in near-surface geophysics: Using a single parameter fitting with 1D model

Source: GEOPHYSICAL PROSPECTING, 44 (2): 233-249 MAR 1996

Abstract: Electrical conductivity mapping is a prerequisite tool for hydrogeological or environmental studies. Its interpretation still remains qualitative but advantages can be expected from a quantitative approach. However a full 3D interpretation is too laborious a task in comparison with the limited cost and time which are involved in the majority of such field studies. It is then of value to define the situations where lateral variations are sufficiently smooth for a 1D model to describe correctly the underlying features.
For slingram conductivity measurements, criteria allowing an approximate 1D inversion are defined: these mainly consist of a limited rate of variation over three times the intercoil spacing.
In geological contexts where the weathering has generated a conductive intermediate layer between the underlying sound rock and the soil, this processing can be applied to determine the thickness of the conductive layer from the apparent resistivity map when the other geoelectrical parameters are known. The examples presented illustrate this application.
ISSN: 0016-8025