Inversion of horizontal‐loop electromagnetic field data: Case histories from Ontario and Northwest territories, Canada

1992 ◽  
Author(s):  
George J. Palacky
Keyword(s):  
Electromagnetic Field ◽  
Northwest Territories ◽  
Field Data ◽  
Case Histories

Field data and till composition in the GEM-2 Rae Glacial Synthesis Activity field areas, Nunavut and Northwest Territories

2021 ◽  
Author(s):  
J E Campbell ◽  
I McMartin ◽  
M W McCurdy ◽  
P -M Godbout ◽  
T Tremblay ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Field Data ◽  
Synthesis Activity

Geology and petrochemistry of lower Aphebian (2.4–2.0 Ga) alkaline plutonic and hypabyssal rocks in the East Arm of Great Slave Lake, Northwest Territories

1979 ◽  
Vol 16 (1) ◽  
pp. 60-72 ◽  
Author(s):  
J. P. N. Badham
Keyword(s):  
Northwest Territories ◽  
Field Data ◽  
Easter Island ◽  
Chemical Data ◽  
Lower Proterozoic ◽  
Great Slave Lake ◽  
Data Support ◽  
Igneous Complexes ◽  
Igneous Activity ◽  
History Of

Two alkaline igneous complexes and three lines of diatreme breccias were emplaced in the East Arm of Great Slave Lake during the lower Proterozoic. Field relationships suggest that those rocks are broadly cogenetic and were emplaced about 2.1 Ga ago.One of the intrusions, the Easter Island dyke, was rotated subsequent to emplacement such that both top and bottom are now exposed. Field and petrographic data are indicative of progressive differentiation along (i.e., up) the dyke and are substantiated by chemical data. The differentiation history of the early gabbros of the Blachford Lake complex is similar. Late differentiates of both complexes closely resemble the igneous matrices of the breccias and petrographic and chemical data support the proposal of cogenesis and contemporaneity.The field data show that there was a period of significant faulting and concomitant alkaline igneous activity in the East Arm area in the lower Proterozoic.

scholarly journals Efficient retrieval of phase information from real-valued electromagnetic field data

2019 ◽  
Vol 1 ◽  
pp. 100019
Author(s):  
Alexander Blinne ◽  
Stephan Kuschel ◽  
Stefan Tietze ◽  
Matt Zepf
Keyword(s):  
Electromagnetic Field ◽  
Field Data ◽  
Phase Information ◽  
Efficient Retrieval

The application of pressuremeter test results in deformation analyses

1977 ◽  
Vol 14 (1) ◽  
pp. 64-75 ◽  
Author(s):  
N. Burgess ◽  
Z. Eisenstein
Keyword(s):  
Field Data ◽  
Back Analysis ◽  
Complex Problem ◽  
Load Test ◽  
Western Canada ◽  
Case Histories ◽  
University Of Alberta ◽  
Bored Pile ◽  
First Case ◽  
The University

The overconsolidated soils and soft rocks which form a large proportion of foundation materials in Western Canada typically have a substantial component of their total deformation of an immediate (time independent) nature. This makes them particularly suitable for application of pressuremeter testing when deformation characteristics are sought for settlement or heave analysis.The presented study is a continuation of work on pressuremeter testing carried out at the University of Alberta systematically since 1971 with a view to developing a pragmatic approach to a complex problem of foundation deformation analysis.Described in detail are pressuremeter testings on three sites in Western Canada where documented case histories of deformation behavior were available. The first case history analysed was a settlement of Mount Blackstrap near Saskatoon, Saskatchewan, which is a man-made ski hill founded on very deep till strata. The second case was the settlement of concrete silos in Calgary, Alberta, founded on a layer of dense, coarse gravel. The third study was concerned with an analysis of a load test on a bored pile embedded in Cretaceous bedrock at the Calgary Airport.At all three sites the pressuremeter derived moduli were used in back-analysis of foundation behavior and the results were compared with previously recorded field data. An agreement between the back-analysis and field data in some cases and discrepancies in others indicate the limitations of this approach to pressuremeter testing in these types of foundation materials. The results are discussed and conclusions are drawn on the basis of these as well as the previously studied case histories.

Advances in alternating electromagnetic field data processing for earthquake monitoring in China

2014 ◽  
Vol 58 (2) ◽  
pp. 172-182 ◽  
Author(s):  
GuoZe Zhao ◽  
YaXin Bi ◽  
LiFeng Wang ◽  
Bing Han ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Data Processing ◽  
Field Data ◽  
Earthquake Monitoring
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