AI-GEOSTATS: Summary: Risk Assessment with Gaussian Simulation?

2002-05-02 Thread Chaosheng Zhang
Dear all, The following is a summary of replies for my question: Risk assessment with Gaussian simulation. Thanks for all the thoughtful replies. Generally speaking, there are three ways to produce a probability map for the purpose of risk assessment: (1) Gaussian simulation with many (e.g.: 10

RE: AI-GEOSTATS: Kriging a stream surface

2002-05-02 Thread Noemi Barabas
Dear Maureen, I have dealt with the same problem. The basic approach is to transform your coordinates as Warren suggested. If you only have one measurement per transect, than it is as simple as working with distance from a set point such as the last or first sampling point, and your variogram a

RE: AI-GEOSTATS: Kriging a stream surface

2002-05-02 Thread William Thayer
To expand on one of the points that Mr Schlechte made regarding measuring distance along the stream, I suggest you get a copy of Pierre Goovaerts publication from ES&T. Unfortunately, I don't have the citation but the subject was applying geostatistics to the Passaic (?) River in NJ and it was pu

RE: AI-GEOSTATS: Kriging a stream surface

2002-05-02 Thread Warren Schlechte
Maureen, I believe we met in Savannah a couple of years ago. If you don't mind, could you send me any responses you get as a summary? Such seems useful to know - how to best deal with boundary conditions. It would seem from my neophyte position that such would be easy to do. First, you don't