5 edition of Drilling, construction, caliper-log, and specific-conductance data for well 3-3604-01, Kawailoa deep monitor well, Oahu, Hawaii found in the catalog.
Published 1996 by Administrator in U.S. Dept. of the Interior, U.S. Geological Survey
Distributed to depository libraries in microfiche.Shipping list no.: 98-0816-M.Microfiche. [Denver, Colo. : U.S. Geological Survey, 1996] 1 microfiche.
|Statement||U.S. Dept. of the Interior, U.S. Geological Survey|
|Publishers||U.S. Dept. of the Interior, U.S. Geological Survey|
|The Physical Object|
|Pagination||xvi, 62 p. :|
|Number of Pages||89|
|2||U.S. Geological Survey open-file report -- 96-430.|
nodata File Size: 3MB.
A defence of the negro race in America from the assaults and charges of Rev. J. L. Tucker, D. D., of Jackson, Miss., in his paper before the Church Congress of 1882
org is an outreach project of thea 501 c 3 not-for-profit organization. 5 m upline and moving the 48-channel receiver array upline Drilling 1 station 1. 7 m70 ft 21. This was addressed by testing the ability of multichannel analysis of surface waves MASW; methods to create a velocity model of the subsurface that defines the base of the critical zone, shows variations within the overlying LWP, and provides downward rates of advance of the weathering front.
This suggests that large velocity contrasts in the critical zone can occur over rather short distances e. For example, the shallow low-velocity zone is easily interpreted as part of the soil zone. Further improvements were made from a recently developed form of the combined active and passive source technique.
Nevertheless, the occasional large outcrops exposed in deep stream cuts e. Such an approach would not only increase the depth of investigation, but also widen the bandwidth for surface-wave recording, especially into low frequencies. The weathering rate calculations are also based on the well-founded assumption that below the soil zone proper, saprolite formation does not result in a significant change in volume.
Reference Site, Ice Springs, Utah The site in Utah tested the ability of the MASW method to provide velocity images of geologically recent basalt overlain and underlain by lower velocity material, and to provide a geological analog for comparison with the Oahu sites.
In this figure, only three ranges of X offsets are shown for simplicity; we used a maximum offset Hawaii 140 ft and specific-conductance data for well 3-3604-01. The derived overtone image showed improved energy accumulation in the frequency-phase velocity domain that was used to better identify dispersion trends.
B Velocity model for active survey HI line 5. Some alterations to the traditional processing steps were needed in order to improve the depth of investigation. We thus acquired a total of 25 records. The modified versions of MASW methods presented herein can be used to overcome this limitation, and are especially useful where conventional seismic methods e.
Dispersion images from HI line 3 exemplify this improvementwith other sites exhibiting similar results see also the reference site at And specific-conductance data for well 3-3604-01 Springs, Utah. In addition, caliper-log the long recording period, several impacts were delivered at different locations at different times.
B, C Close-up views of the weathering zone. The LWP or critical zone profiles we investigated consist of relatively thin, 1—2-m-thick soils overlying saprolite, which composes the majority of the LWP.angle and distance from the continuous scanning of surface waves for a wide range of azimuth. As a result, a continuous geophysical evaluation of the subsurface was needed. In contrast to eastern Oahu, the dry climate of Utah has resulted in little to no chemical weathering of the bedrock such that the interface between basalt and valley fill sediments is sharp.
In addition to shallow weathering, the calculations of account for weathering reactions in the deep aquifer due to extended contact times with unweathered basalt within the Ghyben-Herzberg lens and an assumption of steady-state removal of soil.
From initial borings, engineers were surprised by 1 the existence of soft soils, 2 a highly variable depth to bedrock, and 3 depth to bedrock exceeding the predicted 30 m.
6 m while a hand-augered hole right on the survey line showed silt, marl, and a layer of thin volcanic ash over bedrock at 4.
We thus acquired a total of 25 records.