Availability and Licensing

E4D Open Source NQA-1 Safety Software Release

E4D Modes 1-4, which include mesh generations (mode 1), ER forward modeling (mode 2), ER static inversion (mode 3), and ER time-lapse inversion (mode 4) are available without the Infrastructure Modeling and Inversion Module under the open-source license provided below, and may be downloaded and installed as described in the download and installation section.  Capabilities provided in the release version of the code have been tested and documented to meet PNNL’s Nuclear Quality Assurance Level 1-B software quality requirements as outlined in the Quality Assurance and Testing section. The open-source version of E4D does not include the Infrastructure Modeling and Inversion Module.
 

Open Source License Agreement

E4D: A distributed memory parallel electrical geophysical modeling and inversion code
Copyright © 2014, Battelle Memorial Institute
All rights reserved.
 
1. ​​Battelle Memorial Institute (hereinafter Battelle) hereby grants permission to any person or entity lawfully obtaining a copy of this software and associated documentation files (hereinafter “the Software”) to redistribute and use the Software in source and binary forms, with or without modification.  Such person or entity may use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and may permit others to do so, subject to the following conditions:
  • ​Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimers. 
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 
  • Other than as used herein, neither the name Battelle Memorial Institute or Battelle may be used in any form whatsoever without the express written consent of Battelle.
  • Redistributions of the software in any form, and publications based on work performed using the software should include the following citation as a reference:

    Johnson, T. C., R. J. Versteeg, A. Ward, F. D. Day-Lewis, and A. Revil (2010), Improved hydrogeophysical characterization and monitoring through parallel modeling and inversion of time-domain resistivity and induced polarization data, Geophysics, 75(4), Wa27-Wa41.
​2.  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BATTELLE OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 

Infrastructure Modeling and Inversion (IMI) Module Software Release

E4D’s Infrastructure Modeling and Inversion Module is available under a separate license agreement, the type and fee dependent on the intended use of the software including: 1) collaborative research and development use, 2) academic use, 3) U.S. Government use, and 4) commercial use. Those wishing to explore or obtain a license for the IMI Module should contact PNNL Commercialization Manager David Greenslade at , (509) 375-6555.
 

SIP and Tank Scale Modeling and Inversion Modes

Spectral Induced Polarization (SIP) and tank scale (both ER and SIP) mesh generation, forward modeling, and inversion capabilities (modes 21-23, modes 31-34, and modes 41-43) have not been NQA-1 qualified, and are therefore currently excluded from the publicly available open-source version of E4D. These capabilities will be added to the public-release version of E4D as quality assurance testing and documentation is completed. Those wishing to explore the use and availability of these modes should contact Dr. Tim Johnson at , (509) 372-4715.