Dear Jose, I'm a mining engineer and I think I can answer your question. We use kriging variance for reserve classification. I think you know, the reserves are...
557
Luis Eduardo de Souza
esouza@...
Apr 2, 2002 8:44 am
The estimate and the subsequent classification of the resources in different classes or categories is based on different levels of risk and requires a model...
558
Isobel Clark
drisobelclark@...
Apr 2, 2002 8:45 am
Dear All I have received a couple of emails about difficulties with accessing the stuff in my Yahoo "briefcase". Please accept my apologies for not reading the...
559
Richard Hague
richardh@...
Apr 3, 2002 1:47 pm
List Members, The use of the kriging variance to categorise/classify Mineral (Ore) Resources and/or Ore Reserves is an old chestnut that periodically raises...
560
Isobel Clark
drisobelclark@...
Apr 3, 2002 1:47 pm
Richard Thanks for the clear exposition on the limitation of the kriging variance as a measure of reliability for block estimation. It should, perhaps, be...
561
Stelpstra, David
stelpstra@...
Apr 3, 2002 1:47 pm
Dear list members, I wish to make a remark on the discussion started on the kriging variance. In my opinion the SD of the solution obtained by kriging is...
562
Didiek Bhudy Prabowo
didiekbp@...
Apr 4, 2002 8:27 am
Dear members, I want to know about geostatistics inversion. What was it ? Can you help me ? Best regards Didiek Bhudy Prabowo University of Indonesia ... ...
563
Cardellini Carlo
geochem@...
Apr 4, 2002 11:16 am
Dear members, could you suggest me papers about application of sequential Gaussian simulations to soil sciences, i.e., spatial distribution of a continuous ...
564
Soeren Nymand Lophaven
snl@...
Apr 5, 2002 8:22 am
I would suggest: @Article{rossi:1993, author = {R.E. Rossi and P.W. Borth and J.J. Tollefson}, title = {Stochastic simulation for...
565
Bambang Trisasongko
bht@...
Apr 8, 2002 8:11 am
Dear Didiek, Inversion is advanced topics in Geostatistics. There is good introduction to inverse problems (and scale effects) in chapter 8 of J-P Chiles and ...
566
lorenz.dobler@...
Apr 9, 2002 8:28 am
dear members, Is there anyone with experiences in indicator kriging with soft data using gslib ? i have a continous primary variable and a continous...
567
William Thayer
thayer@...
Apr 9, 2002 8:28 am
I am interested in comparing different estimators of spatial means. Any suggestions or approaches on how to generate a 2-D, autocorrelated, skewed ...
568
Sibylle Eisenberger
s.eisenberger@...
Apr 9, 2002 11:42 am
I´m doing my diploma thesis on the spatial distribution of weeds and I´m an absolute beginner with geostatistics. Please take that into account when reading...
569
Edzer J. Pebesma
e.pebesma@...
Apr 9, 2002 11:42 am
Yes. Generate a Gaussian random field, add a deterministic trend surface, and take the exponent or a power transform of the sum. -- Edzer ... -- * To post a...
570
Edzer J. Pebesma
e.pebesma@...
Apr 9, 2002 1:22 pm
Dear Sibylle, I suspect your residuals will never become normal, because your data are counts. Luckily, normality is not a requirement for variogram ...
571
Rubens Caldeira Monte...
rubenscm@...
Apr 10, 2002 9:42 am
Dear all, We are trying to apply Universal Kriging to “High Plains” Aquifer in Kansas (OLEA, 1999) for land surface elevation (LSE), using its 317 data ...
572
Marta Rufino
mrufino@...
Apr 10, 2002 9:42 am
Hello, I would like to know if there is any free softwares (for windows), "easy to use" that can perform spheric variogram fitting cross-variogram co-krigging ...
573
Isobel Clark
drisobelclark@...
Apr 10, 2002 9:42 am
Rubens Your approach has been long used in hydrology and similar fields with much success. The problem with the standard deviation is that it does not include...
574
Isobel Clark
drisobelclark@...
Apr 11, 2002 7:56 am
Alessandro Thanks for the contribution. If Universal Kriging is applied, there is no need for simulation or multi-indicator approaches to get a standard error,...
575
José Quintín Cu...
cuador@...
Apr 12, 2002 8:03 am
Dear all, I'm working with data from Lateritic Ni Deposits. I want to know what is the exploration grid traditionally in this type of deposits. I ask this...
576
Gregoire Dubois
aigeostats
Apr 15, 2002 8:09 am
Dear all, in the case you send a question to the list, may I remind you to post a summary of any useful responses ? This good old tradition does not seem to be...
577
José Quintín Cu...
cuador@...
Apr 15, 2002 8:09 am
Hi all The answers I have received about the subject Ore Reserves Classification are listed below: Thanks everyone. José Quintín José Quintín Cuador Gil ...
578
Ercan Yesilirmak
ercanyesilirmak@...
Apr 15, 2002 2:01 pm
Dear list members My question is as follows: In my exercise, semivariance value is at near zero high at first lag, then in second lag jumps to the highest...
579
Sigrun Kværnø
sigrun.kvarno@...
Apr 17, 2002 3:06 am
** Reply Requested When Convenient ** Dear colleagues, I don't have much experience with geostatistics, but from now on I will use it in my PhD-study on...
580
Chaosheng Zhang
Chaosheng.Zhang@...
Apr 17, 2002 3:07 am
Ercan, There might be two problems in your data set. (1) The sample number is too small. (2) The are some high value outliers in your data set. I understand...
581
William Thayer
thayer@...
Apr 17, 2002 4:05 am
The replies I received to my request appear below, along with the original request for help. Thanks to those who replied. Original request: I am interested in...
582
Sibylle Eisenberger
s.eisenberger@...
Apr 17, 2002 4:21 am
Hi! Please find below my original message and the list of answers to my question concering the transformation of negative binomial data deriving from weed...
583
uleopold
uleopold@...
Apr 17, 2002 4:24 am
Either use Gstat (www.gstat.org) or/and gslib (www.gslib.com). Both maybe not as user friendly in the sense of nice GUIs as the software you used so far. but...
584
Yetta Jager
zij@...
Apr 17, 2002 7:38 am
Hi Sibylle: Sorry this is so late, but I have just been working on generating a negative binomial as described by Pielou, Cressie and others (e.g., Diggle, ...
585
mbf@...
Apr 17, 2002 7:52 am
Dear Stuart. I good reference paper is: Geostatistical Simulations of regio0nalized Pore-Size Distributions Using Min?Max Autocorrelation Factors. A. J....
