Welcome to Quantum, a periodic e-newsletter.
Quantum
is designed to keep you up to speed on applications, case
histories and
evolutions of quantum magnetometers in a variety
of disciplines.
Airborne Developments
(Top)
New version of
redesigned
complete airborne system GSMP-35AM with VLF option
(Top)
 GEMs
Potassium sensors provide the highest sensitivity available
in the industry. The new tri-axial bird uses the larger volume
(70 mm) sensors that are specifically designed for low-gradient
applications such as exploration for diamonds, gold, silver,
platinum & palladium, which map geologic structures that are
weakly magnetic and may have concentrated precious metals.
GEM's R&D team made successful efforts to modernize Airborne
System. The new bird has maximized sensitivity of sensor
location, redesigned electronics and dismountable elements for
easy transportation.
High sensitivity (0.0007 nT) together with high sampling rate
(20 readings per second) allows you to make very detailed
mapping.
Using GEM's Complete Airborne
System you will receive:
-
High definition range of multi-sensors configurations (Magnetometer, Vertical Gradient or
Tri-Axial Magnetic Gradiometer)
-
TRA series Radar Altimeter
-
20 Hz DGPS with SBAS (WAAS /
EGNOS / MSAS) and OmniStar (Subscription is not included)
-
GEM Data Acquisition Software
with real time Data and altitude display
-
All Weather Highest sub-pico
Tesla Sensitivity
-
VLF option
http://www.gemsys.ca/PDFDocs/GEM Airborne
Solutions.pdf
ท
For more info click
here
Request for Quotation Click
Here
New Airborne
GSM-90AV VLF-EM System
(Top)
GThe VLF-EM system is a two
frequency multi-component receiver that measures the in-phase
and quadrature-phase fields from two
separate radio transmitters in
the VLF frequency range (e.g. 15-30 kHz). Such measurements can
identify low conductance structures containing sulphide-bearing
fluids rich in precious metals.
The GSM-90AV VLF-EM is a state-of-the-art airborne system that
acquires data simultaneously from up to 2 transmitter
frequencies. Data include in-phase, out-of-phase, horizontal
component (x), vertical component (y) and field strength in pT.
With data quality exceeding standard VLF instruments, GSM-90AV
represents a unique blend of physics, data quality, operational
efficiency, system design, and options that clearly
differentiate it from other VLF systems.
A very low frequency (VLF) investigation is well suited to the
location of geologic faults (and approximating their
altitudes), some types of geologic contacts, and buried
conductive bodies including water-bearing faults. The VLF-EM
frequency method is a passive system as it utilizes a fixed
position transmitter broadcasting a frequency between 15 and
30Kz.
In a VLF investigation, the magnetic field components of the
transmitted signal are measured.
This method can delineate
contrasts in conductivity at depth and is used in the search for
contacts, faults, mineralized bodies, overburden, fractures,
voids and for a variety of other purposes, including the
location of utility lines and sitting of water wells.
Targets are of two primary types:
http://www.gemsys.ca/PDFDocs/GSMP35A
Spec.pdf
For more info click
here
Request for Quotation Click
here
Archaeology (Top)
Archaeologists are increasingly
looking at remote sensing methods as techniques to explore
sites with minimum disruption to the surroundings. This work
is delivering new means of mapping prehistoric and historic
sites in three dimensions rather than traditional
two-dimensional methods. Magnetics is a primary remote sensing
technique that offers both ease-of-use and cost efficiency.
Main benefits lie in the ability to resolve details
non-invasively, the wide range of artifacts and cultural
objects that are detectable, and the low-cost of magnetics in
comparison to other methods.
Updated
with new discoveries
(Top)
New extended 2008 version of a
book named Magnetic Surveying in Archeology: More than 10 years
of Using The Overhauser GSM-19 Gradiometer where Tatyana N. Smekalova takes you in a journey of the practical aspects of magnetic surveys for the investigation of various archaeological
sites.
Archaeologists will definitely have an interest in this new work
produced by researchers in Russia, Denmark, Ukraine, Greece,
Syria, Norway, and Egypt over the last 12 years. The book begins
with an overview of methods of magnetic surveying followed by a
description of magnetometers. The remainder of the book provides
case histories from many sites across Africa, the Middle East
and Europe but general lessons may also be applicable to other
investigations in other parts of the world.
http://www.gemsys.ca/Quotations/Archaeology_Book.htm
For more info click
here
Request for Quotation Click
here
Magnetic Observatories
(Top)
Each year, earthquakes injure more than 17,000 people and
cause more than $40 billion in property and environmental
damage globally. In looking for ways to mitigate these losses,
researchers are investigating different methods, including
seismic, strong motion, GPS, electromagnetic, magnetic, radon
and others.
New installation in Oaxaca, Mexico
(Top)
 GEM
has completed new experimental magnetic observatory
installation in Oaxaca, Mexico. The system consists of
SuperGradiometer and dIdD instruments designed for
earthquake research and prediction.
The main goals of the project were establishing reference
conditions to detect magnetic precursors of earthquakes
based on known precursors to eliminate the influence of diurnal
variations of magnetic field, need for a high sensitivity
measurement of components was perceived.
Ergonomic design, high sampling rate, flexibility to enable
real-time transmission to satellite and phone links, etc.
help to keep real-time data. Ruggedness is assured through
rigorous testing and the system is covered by the industry's
longest and most comprehensive warranty (2 years).
GEM's SuperGradiometer is
based on the Potassium SuperGradiometer system and designed
with data quality, high gradient sensitivity and elimination
of cultural noise. Data quality is ensured through
ultra-high sensitivity magnetic gradiometer, which leads the
industry (0.05 pT @ RMS at a sampling rate of 1 Hz) and
precision sensor design. The SuperGradiometer can achieve
gradient sensitivities of 1fT/m (10-15 T/m) with a sensor
spacing of 50 m a major advantage over traditional
long-baseline measurements (total field with reference
station for removal of diurnals), witch have sensitivities on
the order of 1nT. The SuperGradiometer also minimizes cultural
noise from nearby infrastructure that improves measurement
results.
GEM's Potassium Suspended
dIdD (delta Inclination / delta Declination) vector
instrument is designed for obtaining high resolution total
field and variability measurements. Potassium Suspended dIdD
comprises a revolutionary 35 mm Potassium sensor (2.5pT
sensitivity @ 1Hz) with a bidirectional set of bias coils.
Visit our website and
find more information about SuperGradiometer
http://www.gemsys.ca/apps_earthquake_research.htm
Network for Magnetic Observatories
(Top)
 GEM
developed a new system for Magnetic Observatories designed
to set up several magnetometers to a network for the
monitoring and analysis of the magnetic field of the Earth.
The real time data can be used for earthquake research,
volcanology, space studies and mineral exploration.
It is possible to connect several magnetometers to one
network, so the system can be managed remotely. You can
operate and manage the network and GEM magnetometers over
the LAN, WAN or Internet and replace dedicated PCs and
lengthy serial cables with fast and reliable networking
technology. This remote access capability increases
efficiency, saves you time and money while providing easier
management from any browser, anywhere at any time.
For more info click
here
New
Suspended dIdD Potassium System
(Top)
 GEM introduced
the dIdD (delta Inclination / delta Declination) Potassium
vector system for high precision results in obtaining total
field and variability measurements. The high sensitivity of
Potassium sensor (0.05 nT/Hz1/2@ 1 sec) aprovides high
speed measurements. The Suspended dIdD comprises a small
diameter (250 mm), spherical Potassium sensor with a
bidirectional set of bias coils. Data is acquired directly to a
GEM Potassium magnetometer.
The Suspended dIdD simplifies the set-up of magnetic observatory
installations by eliminating the need for fluxgate magnetometers
and thermally insulating structures. In addition, the new system
minimizes ongoing system calibrations, which, in turn, frees
personnel to concentrate on more essential tasks (such as
interpreting and understanding data).
These important new benefits are achieved through system design:
-
Temperature coefficients that
reduce drift to less than 0.1 nT / ฐC (compared with 0.5 nT /
ฐC for high-end fluxgate magnetometers)
-
Physical suspension of the
Potassium sensor (shown experimentally to contribute to
reduced drift)
-
Long term drifts that are less
than 2 nT / year - matching or exceeding the best component
measurement at any observatory and Suspended dIdD system
For more info click here
Request for Quotation: SuperGradiometer click
here
Request for Quotation: Suspended dIdD click
here
Ground Developments (Top)
As ground magnetics is one of the
most-frequently employed and effective geophysical methods
applied to mineral exploration, GEM continues to implement new
strategies for enhancing measuring techniques and results.
Our Research and Development team has led to the development of
a new generation of Potassium magnetometers GSMP-35 version 8 designed to assist
exploration groups and contractors acquire, high-quality
magnetic results.
New release of
GSMP-35 version 8 backpack
mounted Potassium magnetometer / gradiometer
(Top)
 GEM is releasing
a new version of its GSMP-35 optically pumped Potassium
magnetometer (K-Mag) designed to provide backpack-based,
hands-free operation while acquiring high sensitivity
ground-based magnetics data. The first presentation of the
instrument will take place at PDAC 2009 (March 1-4, in Toronto).
The main features of GSMp-35 include:
The system eliminates the use of
supporting sensor poles (with the backpack), thereby providing
convenience and greater efficiency during survey operations
(with the console).
The new K-Mag technology also delivers sensitivity and high
sampling (20 times / second) for mapping of subtle geologic
signals. The system's high gradient tolerance and higher range
of measurement (up to 3 Gauss, optional) is especially useful
for exploring in areas with iron formations, magnetite outcrops,
and other similar targets.
The new K-Mag will give you the following advantages:
-
Sensitivity 0.0025 nT @ 1 Hz
-
Resolution 0.0001 nT
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Absolute Accuracy +/- 0.1 nT
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Gradient Tolerance 30000 nT/m
-
Sampling Rate 1, 5, 10, 20 Hz
-
Electronics box weight 0.63 kg
-
Electronics box size 229mm x
56mm x 39mm
http://www.gemsys.ca/PDFDocs/GSMP-35.pdf
For more info click
here
Request for Quotation Click
here
New design of
our website.
Please take a look and express your
opinion at
www.gemsys.ca
(Top)
At GEM we like to hear from
our customers. If you have any suggestions, commendations, complaints,
great ideas, industry-related articles, testimonials, or
questions of any type we would love to hear from you. We
guarantee a prompt
respond.
Visit
www.gemsys.ca
GEM on the road, upcoming events
(Top)
February 22-25, Denver, CO, USA
Colorado Convention Centre,
Booth # 148
March 1-4, Toronto, Ontario,
Canada
Metro Toronto Convention
Center, Booth # 802
March 29-April 2, Fort Worth,
TX, USA
Renaissance Worthington Hotel,
Booth # 5
April 22-26, Atlanta, GA, USA
Atlanta Marriott Marquis,
International Hall - South, Booth # 508
June 8-11, Amsterdam, The
Netherlands
Amsterdam RAI Building,
Booth # 1001
October 25-30, Houston, TX, USA
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Copyright 2007-2009. GEM Systems, Inc. Advanced Magnetometers.
All rights reserved with the exception of organizations that
have contributed links to this issue. Our thanks to the contributors who have
made this edition possible, and who are identified in the text of related articles
or through their company websites. Note that some quotes relating
to industry-specific trends may have been obtained from public-domain
sources, and are not intended to promote GEM Systems,
Inc. Other examples may not necessarily reflect GEM products;
rather these examples are intended to illustrate the use of magnetics and magnetometry for selected applications.
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