Articles

SeaSPY Technical Application Guide

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Ideal for newcomers to magnetometers and a good refresher for experienced surveyors, this paper begins with a primer on geomagnetism, and continues with a description of Marine Magnetics’ Overhauser sensor technology: how it works, why it works, and why it is so effective.
Written by Doug Hrvoic

Lake Based Magnetic Mapping of Contaminated Sediments, Hamilton Harbour

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In 2002, McMaster University undertook a novel approach to measuring pollutant levels in Hamilton Harbour, an area that has been exposed to steel refining and other heavy industry for decades. Sediments from sulfur-rich airborne emissions have collected over time, creating highly toxic conditions to marine life. Until recently, the only known method for mapping the highest concentrations of the pollutants has been with time-consuming drill-core samples. However, the McMaster team identified an iron-oxide (magnetite) component to the emissions that could be detected with magnetic methods. Using a SeaSPY magnetometer, the team created a thorough, high-resolution magnetic map of the area that correlates closely with toxic sediment concentrations.

Reprinted from Proceedings of SAGEEP Annual Meeting, Feb. 2002, Las Vegas, Nevada
Written By Dr. Joe I. Boyce, Matthew R. Pozza, Dr. William A. Morris

High Resolution Magnetics In Marine Oil Exploration

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The Acquisition of marine magnetic data on seismic exploration vessels has increased dramatically over the last five years. More sensitive magnetometer equipment, combined with new software processing methods are proving that marine magnetic data can
enhance 3-D seismic geological interpretations. The author journeys aboard a seismic research vessel with a crew from FUGRO- LCT, and describes how SeaSPY Overhauser magnometers are used to enhance exploration geological/geophysical data models.

Reprinted from Hydro International 1999
Written by Doug Hrvoic

A Comparison of a New Marine Magnetometer System to High-Resolution Aeromagnetic Data: A Case Study From Offshore Oman

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Reprint of SEG Poster Presentation 1999
Written by Brian S. Anderson, Mark B. Longachre and Patrick Quist

High Resolution Magnetic & Seismic Imaging of Basement Faults in Western Lake Ontario and Lake Simcoe

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Reprinted from Proceedings of SAGEEP Annual Meeting, Feb. 2002, Las Vegas, Nevada
Written By Dr. Joe I. Boyce, Matthew R. Pozza, Dr. William A. Morris

High Res Magnetic Target Survey:

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Reprinted from Hydro Magazine, July 4
Written by Doug Hrvoic and Matthew Pozza

Marine Magnetic Survey Caesarea Maritima – Int. Journal of Nautical Archaeology

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Reprinted from The International Journal of Nautical Archaeology (2004)
Written by J.I. Boyce*, E.G. Reinhardt*, A. Raban† and M.R. Pozza

Maritime Archaeology Paper – King Herod’s Harbour

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Written by J.I. Boyce*, E.G. Reinhardt*, A. Raban† and M.R. Pozza


Towed Body Magnetometer Enhances Subsea Surveys

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Reprinted from International Ocean Systems 2000
Written by Natasja Verboom, Malcolm Morgan and Justin Dunning


Marine Magnetometer Said To Minimise Seismic Interference Risk

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Gravity and Magnetics contractor Fugro-LCT uses SeaSPY magnetometers on large seismic survey oil-exploration vessels worldwide. Collecting SeaSPY magnetic data along with seismic data is a very efficient and cost-effective option, provided the magnetometer and seismic streamers can be prevented from tangling. The article describes an innovative deployment technique, bypassing much of the ‘danger zone’.

Reprinted from First Break 2000
Written by Fugro LCT