Heavy
April 20, 2023
Heavy is a Fortran program for calculating the change in gravity caused by the change in groundwater storage as predicted by a MODFLOW groundwater-flow model.
Gravity change is calculated relative to the initial time step at user-specified locations (e.g., measurement locations). At each location, the gravitational attraction is the sum of the attraction caused by storage change (confined or unconfined) within each model cell and layer.
Heavy is intended to be incorporated into workflows for parameter estimation such as PEST++.
Citation Information
| Publication Year | 2023 |
|---|---|
| Title | Heavy |
| DOI | 10.5066/P9IIHXN3 |
| Authors | Jeffrey R Kennedy, Joshua D Larsen |
| Product Type | Software Release |
| Record Source | USGS Asset Identifier Service (AIS) |
| USGS Organization | Arizona Water Science Center, Tucson Office |
Related Content
Heavy: Software for forward-modeling gravity change from MODFLOW output
Fortran software, named Heavy, was developed to simulate gravity change due to water-storage change in MODFLOW groundwater models. Heavy is compatible with MODFLOW-2005 and MODFLOW-NWT models using the layer-property flow or upstream weighting packages. All of the necessary information for the gravity calculation—the geometry of the model cells, the storage coefficient, and head change—is present
Authors
Jeffrey Kennedy, Joshua Larsen
Related Content
Heavy: Software for forward-modeling gravity change from MODFLOW output
Fortran software, named Heavy, was developed to simulate gravity change due to water-storage change in MODFLOW groundwater models. Heavy is compatible with MODFLOW-2005 and MODFLOW-NWT models using the layer-property flow or upstream weighting packages. All of the necessary information for the gravity calculation—the geometry of the model cells, the storage coefficient, and head change—is present
Authors
Jeffrey Kennedy, Joshua Larsen