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hollow refraction seismic 2013

Application of Uphole Seismic Refraction Survey for ...

In this paper, an uphole refraction survey was carried out at the location of LISO Field in Niger Delta Nigeria in order to determine/estimate the thickness and velocities of the strata with a view to ascertaining the suitability of these layers for seismic reflection data acquisition and engineering structures. A hole drilled to a depth below the weathered layer contained hydrophones ...

Seismic Refraction Research Papers - Academia.edu

View Seismic Refraction Research Papers on Academia.edu for free.

Development of land streamer technologies for estimating ...

Seismic land streamers borrow on the idea of marine seismic systems. We tow a seismic source and streamer behind a vehicle to obtain seismic velocity, refraction, and reflection information in profile. Although marine streamers are towed continuously and immediately

3D ultra-high resolution seismic imaging of shallow ...

Jun 13, 2017· A seismic refraction experiment southeast of Ruapehu volcano. New Zealand Journal of Geology and Geophysics 24, 31–38 (1981). Article Google Scholar

Seismic Reflection - an overview | ScienceDirect Topics

Nov 12, 2017· Seismic refraction and reflection profiles across the northern Cordillera show the crust to be nearly 50 km thick under the south-eastern Canadian Cordillera and parts of northern Alaska (Figure 2).Below the Intermontane Plateau System in Alaska and northern Canada, it is about 35 km thick, and under the southern Canadian Cordillera only 30 km thick.

TAN CHEE GHUAN - Google Scholar Citations

Subsurface Characterization Using Seismic Refraction and Borehole Drilling for Slope Stability Study SM Ng, MAM Ismail, CG Tan, R Yusoh Electronic Journal of Geotechnical Engineering 20 (Bund. 6), 1641-1650, 2015

APPLICATION OF SEISMIC REFRACTION SURVEY METHODS …

Seismic refraction provides engineers and geologist with the most basic of geological data through simple procedures with common equipment (Milsom, 2003). It is most commonly used where bedrock is less than 500 ft below the ground surface. Seismic refraction is defined as the travel path of a sound wave through an upper medium and along an

Flatirons Overview - Part 1 - YouTube

Sep 30, 2013· Overview of Flatirons Refraction Statics - Part 1. How to build a Well-Designed and Interactive Excel Dashboard with Pivot Tables and Pivot Charts - Duration: 30:52. The Office Lab Recommended for you

Seismic Reflection Method - KSU

8/GPH221L4 KSU 2012-2013 II. Gathering of Seismic Data Large volume of seismic data can be recorded and be organized in different ways. A GATHER is the name for a collection of seismic traces. There are several trace gathers, these are: Common Shot Gather: a collection of seismic traces recorded at several receivers (geophones) from single shot.

BASIC THEORETICAL PRINCIPLES OF SEISMIC METHODS I. …

KSU 2012-2013 Seismic Refraction Method •The first seismic method utilized in the field of exploration. • It was used in seismology for determining the Mohorovicic discontinuity, and to discover the nuclei of earth. • The Description of the geometry of refracted waves is more complex than that of reflected ones.

Developing cost-effective seismic mineral exploration ...

Sep 04, 2017· Since 2013 and through a number of case studies, we have been testing a newly developed for urban environment, digital-based 240 m long, seismic landstreamer for …

(PDF) Seismic refraction methodology for groundwater level ...

Seismic refraction has been utilized widely in the past to characterize shallow aquifers and subsurface layers. This study applies the method on a water-shed scale to get information on the ...

3D Refraction Statics Integrated with Surface-Consistent ...

directly related to the refraction static problem (e.g., base maps, gravity or magnetic models, wells, or seismic cross-sections) can also be included. Note that the images shown above were AAPG Search and Discovery Article #90170©2013 CSPG/CSEG/CWLS GeoConvention 2008, Calgary, Alberta, Canada, May 12-15, 2008

Reflection seismology - Wikipedia

Reflection seismology (or seismic reflection) is a method of exploration geophysics that uses the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves.The method requires a controlled seismic source of energy, such as dynamite or Tovex blast, a specialized air gun or a seismic vibrator, commonly known by the trademark name Vibroseis.

Seismic Refraction Survey – Shallow Earth Technologies Inc.

Seismic Refraction Survey The seismic refraction survey method is commonly used to measure variations in the speed of acoustic compressional wave, or P-wave, propagation in layered earth. For the seismic refraction method, an acoustic wave that is typically generated at ground surface propagates into the subsurface soil and rock.

Seismic reflection method - Ground geophysics techniques

Seismic reflection is ideal for mapping geology at depths exceeding 50 m. Deep seismic reflection surveying is the most advanced technique in geophysics today, thanks to its application on a huge scale for oil and gas exploration.

Geological Surveying Methods Used in the Newbury ...

Seismic Refraction Surveying Seismic refraction surveying uses an energy source such as a sledgehammer blow or a small explosion to set up a series of vibrations in the upper layers of the Earth. For this project, a sledgehammer was used. The seismic waves from the hammer blow move outward in all directions through the Earth.

Integration of Seismic Refraction and 2D Electrical ...

Received 2013 . ABSTRACT . The aim of this research is to locate the geological contact for engineering purpose applying seismic refraction and 2D electrical resistivity method. Resistivity and seismic refraction method was conducted on four survey lines with 3 lines

APPENDIX I GEOPHYSICAL TESTING REPORT

21-26, 2013 by Rudy Rawcliffe and Wayne Campbell of Northeast Geophysical Services. This report describes ... The results of the seismic refraction P-wave and MASW S-wave analysis are attached as Attachments A and B respectively. Table 1 summarizes the calculated seismic …

Seismic performance of circular hollow RC bridge columns ...

Dec 31, 2014· A column test under cyclic lateral loads with a constant axial load was performed to investigate seismic performance of circular hollow reinforced concrete columns. Twenty-one test specimens with the following dimensions were tested: column lengths of 4,000 and 5,400 mm; outside cross-sectional diameters of 1,000 and 1,400 mm; inside cross-sectional diameters of 500, 750, and …

Shallow Seismic Reflection - Landtech

For about seven decades seismic reflection techniques have been successfully used to investigate subsurface features for petroleum exploration. In the last 15 years, however, this method has been applied to solve engineering and environmental problems as a result of new equipment and advances in processing techniques which now make it a very cost-effective approach.

CiteSeerX — Seismic refraction study of Gurara dam phase ...

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Seismic refraction study has been carried out on Gurara Dam Phase II proposed axis with the aim of determining its feasibility for the founding of a dam. The field techniques involved off-end/reverse and split spread shootings on five profiles. The study site is situated on the Precambrian Crystalline Basement …

Hollow Planet Seismology Vs Solid Earth Seismology

by Jan Lamprecht. Let me show you how my Hollow Planet seismic model can explain the Earth's seismology better than the existing solid Earth seismic model - and yet not one person at any university has shown the slightest interest in this. The purpose of this page is to demonstrate a number of most amazing things about seismology to the Reader in the clearest and simplest manner possible.

SEISMIC REFRACTION INVESTIGATION AT AIN AL FARAS OF ...

Tome 13/2013 Issues 1: SEISMIC REFRACTION INVESTIGATION AT AIN AL FARAS OF GADAMES CITY, LIBYA . Fathi S. ELBURAS . Geophysics Department, Faculty of Sciences, Tripoli University, Tripoli, Libya, [email protected] . Abstract . Seismic reflection method applied to investigate the shallow strata around Ain Al-Faras spring area (AAF), as a

Structure and evolution of the Gulf of Mexico: New results ...

We shot refraction data along these lines with an industry vessel. The four OBS refraction profiles are located 1) offshore south Texas, 2) offshore western Louisiana, 3) offshore Alabama, and 4) offshore western Florida. Each of these seismic transects was oriented perpendicular to the margin from the coast towards the central Gulf of Mexico.