這是一個非常有名的地下水資源和地下水污染模擬軟件。是美國地質調查局和環保局批准的環境模擬軟件。
GMS 是可利用的最複雜的和最包羅萬象的地下水模型軟件! 在美國政府機關，私人公司和超過90個國家以上的國際性組織,都已有用了成千上萬的用戶在使用GMS,它已經被證明是十分有效的和令人興奮的模型系統。 GMS 每狀態地下水模擬提供包括位置描述，模型發展，口徑測定，後處理和可視化的工具。
GMS是目前最綜合的地下水建模軟件。美國政府部門、私企和國際上超過90 個國家的用戶都在使用GMS軟件，GMS已經被證明是最有效的建模系統。 GMS為地下水模擬的每一階段提供靈活的模擬工具，包括地點描述、模型開發、校準、後處理和模型顯示。 GMS支持二維和三維的有限元和有限差模型，包括MODFLOW 2000, MODPATH, MT3DMS/RT3D, SEAM3D, ART3D, UTCHEM, FEMWATER, PEST, UCODE, MODAEM 和SEEP2D. 無論你需要什麼模型，GMS都會提供相應工具！
GMS supports both finite-difference and finite-element models in 2D and 3D including MODFLOW 2000, MODPATH, MT3DMS/RT3D, SEAM3D, ART3D, UTCHEM, FEMWATER, PEST, UCODE, MODAEM and SEEP2D. Regardless of your modeling needs, GMS has the tools!
The program's modular design enables the user to select modules in custom combinations, allowing the user to choose only those groundwater modeling capabilities that are required. Additional GMS modules can be purchased and added at any time. The software will dynamically link to these subsequent modules at run time—automatically adding additional modeling capability to the software.
GMS Applications
GMS provides tools for every phase of a groundwater simulation including site characterization, model development, calibration, post-processing, and visualization. GMS supports a number of finite-difference and finite-element models in 2D and 3D including MODAEM, MODFLOW 2000, MODPATH , MT3DMS, RT3D, SEAM3D, FEMWATER, PEST, SEEP2D and UTEXAS.
GMS can be used for a number of modeling applications including site visualization, aquifer resource studies, well field management and permitting, site contamination evaluation and cleanup, natural attenuation and bioremediation, as well as seepage and slope stability.
What's new in GMS 7.1
The following is a list of the more significant changes in GMS 7.1
New toolbar
The new toolbar includes tools for building polygons, running models, and for the Map - X commands where X is a geometric object or numerical model
MODFLOW enhancements
MODFLOW MNW Package
MODFLOW HFB parameters
MODFLOW SFR parameters
Better handling of unsupported MODFLOW packages in the Name file
Model checker support for DRT, ETS and MNW packages
PEST
Support for the latest version of PEST
Parallel PEST
Now you can run PEST in parallel on your own computer to take advantage of machines with multiple cores
SVD and SVD-Assist
Now you use the Singular Value Decomposition option with PEST as well as the very powerful SVD-Assist method
UTEXAS enhancements
Pseudo-static analyses option support (seismic coefficient, Group K Sub-Command SEI )
Tangent line support for starting circles
Interpolated shear strengths support
Fixed grid search support
Graphical editing of starting circle
Import of GeoStudio files
Simplified interface for GMS 2D mode
Hiding of tools and modules not in use
SEEP2D model automatically initialized from conceptual model
SEEP2D boundary conditions automatically mapped from conceptual model (no need to run Map - SEEP2D)
Easily create all coverage types in one step
Feature object types automatically assigned based on coverage attributes
Allow only one conceptual model
New Redraw Display command to force recreation of all the display lists
Map to existing feature polygons when doing Shapes - Feature Objects or ArcObjects - Feature Objects
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