One emphasis of CGEM is technology transfer. Besides the usual approach of providing our sponsors with annual reports and detailed technical reports on different projects, we are committed to delivering one program package each year. The objective is to transfer the technologies resulted from research back to our sponsors for practical applications.

These packages are not the typical research programs. Instead, we take the codes generated from the research phase and further develop them into near commercial quality softwares that are fully tested and documented (FORTAN). The included Graphic User Interface (GUI) enables these delivered programs to be used directly in active exploration projects without the need to integrate them into sponsors' existing softwares. Brief descriptions of these packages are provided below.

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__Major Applications:____
__**CGEMaestro**
**GG3D**- Gravity Gradiometry Inversion
**GSURFINV**- Gravity Inversion with Surfaces
**BININV3D**- Binary Inversion of Gravity Data
**AMPINV3D**- Magnetic Amplitude Inversion

__Minor Utility Applications:____
__**GG_Terrain**
**Gz_Terrain**
**GGFOR3D**
**Plot
Tenser**
**GXF2GXF**
**GXF Utility**
**Level**
**AMPFOR3D**
**GSURFFOR**
**Terrace**:updated magnetic terracing
**MAGAMP**: convert total field to amplitude
**Plot / Grid**- newly developed utility for gridding and generation of high quality data image

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CGEMaestro:
A software package developed at the Center for Gravity, Electrical & Magnetic
Studies (CGEM) for the sponsors of the Gravity and Magnetics Research
Consortium (GMRC)

Members of Center for Gravity, Electrical & Magnetic Studies
(CGEM) have begun development of an in-depth, multi-year software package
in large for the sponsors of the Gravity and Magnetics Research Consortium
(GMRC). The package, named **CGEMaestro**, is designed to bring all
of the programs developed over the past, present and future together through
a simple and elegant interface. This algorithm will allow the user to
perform numerous operations related to the processing and interpretation
of gravity and magnetic data. In addition, the project will likewise standardize
all existing and future algorithms such that data and model formatting
are consistent from component to component. While significant progress
has already been made towards a deliverable package, the long term development
of component links to CGEMaestro may occur through the requests and recommendations
of the sponsoring companies directly. In this presentation, we demonstrate
the current state of the software package, including current research
code already built into the program, additions which we have already begun
to develop for the future, and possible additions of interest to the GMRC
sponsors.

Binary Inversion v2.1 (BININV3D)

The algorithm, developed at the Gravity and Magnetics Research Consortium,
is a tool for inverting gravity over a 3 dimensional distribution of density
contrast, or anomalous density (henceforth referred to as ’density’ for
simplicity). The program is based on the binary formulation presented
in the publications: Krahenbuhl & Li (2006) and Krahenbuhl (2005). For
the salt body problem, the method is well suited for overcoming difficulties
which arise when the salt body straddles a nil-zone – i.e. a region where
there is no density contrast between salt and sediment. The binary inverse
approach has likewise proven valuable for the time-lapse gravity inverse
problem, where there is a well defined subsurface density change due to
fluid flow over time.

Gravity gradient forward modeling (GGFRQFWD)

Developed by the Gravity and Magnetics Research Consortium to study the
effect of terrain resolution on the accuracy of complete Bouguer corrections
in the presence of acquisition filters in airborne gravity gradiometry
surveys, the algorithm proved efficient for large-scale modeling of density
contrasts. Gravity gradient data are useful in structural basin characterization
in petroleum and mining applications, and for direct detection of dense
ore bodies, to name a few. The data are high quality relative to other
airborne survey types due to the rejection of common mode noise, the direct
measurement of quantities that are calculated from noisy data in standard
gravity surveys, and the collection of redundant data. Utilizing the Frequency
domain, the program will work up to six orders-of-magnitude faster than
a cell-based spatial domain approach and is useful to model any density
variation that can be represented as a layer. Several layers can be superimposed
to model the gravity gradient response due to realistic geology.

TERRACE

The terracing program, developed by the is an implementation of the technique proposed by Lindrith Cordell and A. E. McCafferty in "A terracing operator for physical property mapping with potential field data" published in GEOPHYSICS, 1989, vol. 54, No. 5, pages 621 – 634. The only departure from the proposed technique is that this version of the program uses a modified approach to curvature determinations, by using the value of the curvature in the direction of maximum gradient. The terracing is achieved through an iterative process.

GGDNS:
A Program Library for Estimating and Removing Noise from Gravity Gradiometry
Data

GGDNS is a program libary designed to estimate and remove the noise contaminating
gravity gradiometry data. The automatic denoising algorithm utilizes the
discrete wavelet transform based on orhtonormal, compactly supported wavelets
such as Daubechies wavelets or symmlets. It operates on data profiles
so that the noise in data can be removed before they are gridded for subsequent
processing and interpretation.

EEDECON:
A Program Library for Performing Extended Euler Deconvolution of Magnetic
Data

EEDECON
estimates the depth to source based on Extended Euler deconvolution of
magnetic data. There are two main variants of this program. In the first
variant, the structural index (SI) is specified and the program solves
for source location (x0 , y0 , and z0) and background values. In the second
variant, the SI is also considered as an unknown and the program solves
simultaneously for it together with the source location. The GUI allows
the user to easily input a grid file in GXF format, specify an output
file, and select an Extended Euler deconvolution method with parameters.
It then automatically calculates derivatives and the generalized Hilbert
transform, and carries out Euler deconvolution.

GG3D:
A Program Library for 3D Inversion of Gravity Gradiometry Data

This program inverts for density contrast distribution from multi-component gravity gradiometry data. The program has the capability to impose lower and upper bounds on the inverted density contrast. It also allows arbitrary data locations for maximum flexibility. We have also incoporated wavelet compression to speed up the inversion and increase the size of the problems that can be solved.