Hi Solomon, the curie point depth will vary depending where you are on the
earths surface and what terrane you're in, over the oceans, near the coasts,
over mobile belts or cratons, more local tectonic-heat flow factors/features
can effect the depths over rifts or plumes or basins etc. definitely only gross
generalizations coming from here, Ed
On Monday, May 18, 2015 12:18 PM, "solomonjanjaro
<[email protected]>" <[email protected]> wrote:
Ed,
Thank you for your support. Want to ask again. ...what is the appropriate
upward continued depth for the curie depth calculation? I have upward continued
residual data to 23km, 24km, 25km and 26km but I am not satisfied with the
results.
Thank you.
SolomonOn 18 May 2015 19:08, "edcunion <[email protected]>"
<[email protected]> wrote:
Hi Solomon, just sticking to generalities here a few more mag depth
determination methods beside upward continuation are listed below and available
in Geosoft or found in the USGS GXs written for Geosoft- various other
frequency/wavelength filtering techniquesEuler deconvolution and other similar
depth to magnetic source techniquesmatch filtering-power spectra technique
(USGS suite)3D voxel inversion (Voxi)parametric modeling (PotentQ module for
Geosoft) Geosoft also provides the GM-SYS module for the creation of of more
detailed & complex magnetic models. there will be a few other methods and
proprietary or public domain softwares beside the above that could be tried
that can crosscheck mag upward continuation depth approximation results, Ed
On Monday, May 18, 2015 10:12 AM, "solomonjanjaro
<[email protected]>" <[email protected]> wrote:
ED CUNION,
In a situation where I have only aeromagnetic data to use.....which other
methods do I use? Please suggest.
SolomonOn 18 May 2015 17:05, "edcunion <[email protected]>"
<[email protected]> wrote:
Beside longer wavelength magnetic data other available datasets that might be
tried to crosscheck the mag result depths are regional gravity, satellite
gravity datasets are freely available on the web with Grace being just one
example, seismic surface wave shear velocity models (coarse in some areas) may
also help, some of these data too are obtainable on the web, and regional MT
studies, Alan Jones and his teams have published several papers with images
from different continents, there may be some regional depth inferences in these
MT papers. Ed CunionRed Rocks Geophysical Consulting13224 W Utah
CircleLakewood, CO 80228 USA email: [email protected]
On Monday, May 18, 2015 6:49 AM, "solomonjanjaro
<[email protected]>" <[email protected]> wrote:
Dear all.
Please I need help on different methods of determining crustal thickness using
aeromagnetic data.
1. I have upward continued filter on my residual data and window a block of
66x66 km and I have 16 blocks of this size over my study area and I have also
used this formula Zb=2Zo - Zt
Where Zb = curie depth
Zo = depth to centroid
Zt= depth to top
But want other methods to confirm result.
Thank you
Solomon Nehemiah Yusuf
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