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== Misc ==
 
  
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add your news here
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== Anaqsim release 2023-1, new partnership with Yellow Sub Hydro ==
  
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In the past year, Fitts Geosolutions (USA) has teamed with Yellow Sub Hydro (UK) to work on Anaqsim jointly.  This is the first release from that joint effort.  This release includes many new improvements in computational performance and in outputs.  Visit the homepage click [https://www.anaqsim.com here].
  
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== AEM and Python Shortcourse, September 22-24, 2008, Bethesda, MD ==
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== Bakker and Post book, Analytical Groundwater Modeling: theory and applications using Python ==
  
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Hello everybody -
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Bakker, Mark Bakker & Vincent Post, 2022, Analytical Groundwater Modeling: Theory and Applications using Python, CRC Press Taylor & Francis, [https://doi.org/10.1201/9781315206134 doi: 10.1201/9781315206134]
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We are very excited to be able to offer the course:
 
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"Building and Applying Analytical Element Models with Examples and Exercises using Python"
 
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2.5 Day Shortcourse, September 22-24, S.S. Papadopulos & Assoc.Office, Bethesda, Maryland (USA) 
 
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As you know, analytic element models are often refreshingly easy to understand and very insightful. The best approach to learn the analytic element method is to implement it in a simple computer program. This may sound daunting, but using the easy and powerful Python language, it becomes possible for any hydrogeologist with just a basic understanding of the building blocks of a computer program. In this new course, which is taught by me, you will actually build your own analytic element model, and I expect you will have a great time doing it!
 
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For further information on the course, please visit: http://www.sspa.com/Software/analytic.shtml
 
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A block of rooms will be arranged at a nearby hotel for course participants – details will be provided on this web page soon.
 
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For logistical questions, please contact Matt Tonkin, matt@sspa.com
 
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For questions on the course content, please contact me at markbak@gmail.com
 
  
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We hope to see you in September in Maryland.
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== Strack receives 2021 M. King Hubbert Award ==
  
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Best regards,
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Professor Otto Strack of the University of Minnesota received the National Groundwater Association [https://www.ngwa.org/members/awards/m-king-hubbert-award-recipients M. King Hubbert Award 2021]
  
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Mark Bakker
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== McLane presentation at MODFLOW and More 2019, Golden, Colorado ==
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TU Delft, Kiwa WR, and WHPA, Inc.
 
  
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== Visual AEM version 1.0 released March 2008 ==
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"AEM --- Stepwise Tool for Analyzing Flow in Fractured Bedrock Aquifers", by Charles McLane, MODFLOW and More, Golden, CO, June 3, 2019 (27 minutes). 
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Click for [https://youtu.be/cUVGf6ffSIM Youtube video].
  
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Dear Visual Bluebird Users,
 
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You are receiving this mail because you have either downloaded the Visual Bluebird groundwater modeling software or have otherwise expressed interest in the release of the newest version of VBB.
 
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Visual Bluebird has been officially superseded by Visual AEM, version 1.0, with extended support for multiple analytical element models, limited transient flow, and multiple layers. Visual AEM can now be accessed via the following web page:
 
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http://www.civil.uwaterloo.ca/jrcraig/VisualAEM/Main.html
 
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Included in this current release:
 
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·        Support for multi-layer modeling with the TimML numerical engine
 
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·        Limited support for transient flow (Theis pumping wells)
 
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·        Multi-species numerical contaminant transport using analytic (AEM) flow fields
 
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·        More advanced analytical transport solutions (including parent-daughter decay/biodegradation)
 
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·        Improved support for basemaps (vector or raster) and digital elevation models (DEMs)
 
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·        A geological media database for importing common soil types and properties
 
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·        Element geometric simplification routines
 
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·        Extended support of contour labeling and visualization, with contour masking
 
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·        Extended mesh and grid editing capabilities
 
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·        Improved object manager features
 
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·        More robust model checking
 
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·        An updated version of the numerical engine Bluebird/Cardinal (version 3.5)
 
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·        Many minor revisions, including bug removal       
 
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As always, we encourage requests and suggestions! If you have any problems, complaints, or praise for the newest version, feel free to contact the author at jrcraig@uwaterloo.ca
 
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Please feel free to forward this e-mail to other interested parties.
 
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If you would like to be removed from this distribution list, please reply to this message with the heading “UNSUBSCRIBE”
 
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Kind Regards,
 
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James R. Craig, Ph.D.
 
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Assistant Professor
 
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Department of Civil and Environmental Engineering
 
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University of Waterloo
 
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jrcraig@uwaterloo.ca
 
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http://www.civil.uwaterloo.ca/jrcraig/
 
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(519) 888-4567 x37554
 
  
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== Recent Select Publications in the AEM [[wikibib]]  ==
  
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== Recent Publications in the [http://www.analyticelements.org/wiki/index.php/Wikibib AEM Wiki Bib] ==
 
  
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Mark Bakker, Derivation and relative performance of strings of line elements for modeling (un)confined and semi-confined flow, Advances in Water ResourcesVolume 31, Issue 6, , June 2008, Pages 906-914.
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Kraemer, Stephen R. 2023. Analytic element domain boundary conditions for site-scale groundwater flow modeling Los Angeles Basin,Groundwater, [https://ngwa.onlinelibrary.wiley.com/doi/10.1111/gwat.13322 https://ngwa.onlinelibrary.wiley.com/doi/10.1111/gwat.13322]
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(http://www.sciencedirect.com/science/article/B6VCF-4S0PKNG-2/1/f62af25c62ba97b380faa716b51a2e0a)
 
  
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Abstract:  
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Strack, Otto DL and Toller, Erik AL. 2022.  An analytic element model for highly fractured elastic media, International Journal for Numerical and Analytical Methods in Geomechanics}, 46(2):297--314.
  
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In the analytic element method, strings of line-sinks may be used to model streams and strings of line-doublets may be used to model impermeable walls or boundaries of inhomogeneities. The resulting solutions are analytic, but the boundary conditions are met approximately. Equations for line elements may be derived in two ways: through integration of point elements (the integral solution) and through application of separation of variables in elliptical coordinates (the elliptical solution). Using both approaches, two sets of line elements are presented for four flow problems: line-sinks and line-doublets in (un)confined flow, and line-sinks and line-doublets in semi-confined flow. Elliptical line elements have the advantage that they do not need a far-field expansion for accurate evaluation far away from the element. The derivation of elliptical line elements is new and applicable to both (un)confined flow and semi-confined flow; only the resulting expressions for elliptical line elements for semi-confined flow have not been found in the current groundwater literature. Existing solutions for elliptical line elements for (un)confined flow were intended for the modeling of isolated features. Four examples are presented, one for each flow problem, to demonstrate that strings of elliptical line elements may be used to obtain accurate solutions; elliptical line-doublets for semi-confined flow can only be strung together in combination with two integral line-doublets. For a zigzag canal in (un)confined flow, a string of elliptical line-sinks performed better than a string of integral line-sinks of the same order when the smallest angle between two adjacent segments is less than 130[degree sign]. Elliptical line-doublets performed better than integral line-doublets for a square inhomogeneity in a uniform, confined flow field; the difference was smaller for an octagonal inhomogeneity. For semi-confined flow, the difference between the integral and elliptical line-sinks was small when modeling a zigzag canal.
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Leaf, Andrew T. and Fienen, Michael N. and Reeves, Howard W. 2021. SFRmaker and Linesink-Maker: Rapid Construction of Streamflow Routing Networks from Hydrography Data, Groundwater, 59(5):761-771, [https://doi.org/10.1111/gwat.13095 https://doi.org/10.1111/gwat.13095]
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Keywords: Analytic element method; Line elements; Line-sink; Line-doublet
 
  
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Ramgraber, Maximilian and Schirmer, Mario, 2021. Hydrogeological uncertainty estimation with the analytic element method, Water Resources Research, 57(6).
  
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Steward, D. R., P. Le Grand, et al. (2008). "Analytic formulation of Cauchy integrals for boundaries with curvilinear geometry." Proceedings of the Royal Society a-Mathematical Physical and Engineering Sciences 464(2089): 223-248.
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Steward, David R, 2020. Analytic Element Method: Complex Interactions of Boundaries and Interfaces, Oxford University Press,
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Mesa, E. and E. I. Anderson (2008). "A local model for analysis of pump and treat systems with vertical barrier walls." Advances in Water Resources 31(3): 473-483.
 
  
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Kraemer, S. R. (2007). "Analytic Element Ground Water Modeling as a Research Program (1980 to 2006)." Ground Water 45(4): 402-408.
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Mohammadi, A and Ghaeini-Hessaroeyeh, M and Fadaei-Kermani, E, 2020. Contamination transport model by coupling analytic element and point collocation methods, Applied Water Sciences, 10(1):1-10.
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Koehn, Weston, 2020. Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies, dissertation, Kansas State University.
  
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Jin, W. and D. R. Steward (2007). "The transition of flow patterns through critical stagnation points in two-dimensional groundwater flow." Advances in Water Resources 30(1): 16-28.
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Haserodt, M.J., Hunt, R.J., Cowdery, T.K., Leaf, A.T., and Baker, A.C., 2019. Simulation of the regional groundwater-flow system in the St. Louis River Basin, Minnesota: U.S. Geological Survey Scientific Investigations Report 2019–5033, 41 p., [https://doi.org/10.3133/sir20195033 doi.org/10.3133/sir20195033].
  
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Becker, M. W. and Z. Jiang (2007). "Flux-based contaminant transport in a GIS environment." Journal of Hydrology 343(3-4): 203-210.
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Fitts, Charles R., 2018. Modeling dewatered domains in multilayer analytic element models, Groundwater, Methods Note, 56(4):557-561. July-August, [https://doi:10.1111/gwat.12645 doi:10.1111/gwat.12645].
  
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Bandilla, K. W., I. Jankovic, et al. (2007). "A new algorithm for analytic element modeling of large-scale groundwater flow." Advances in Water Resources 30(3): 446-454.
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Strack, Otto D.L., 2017. Analytical Groundwater Mechanics, Cambridge University Press, [http://www.cambridge.org/9781107148833 ISBN: 9781107148833]
  
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Bakker, M., K. Maas, et al. (2007). "Analytic modeling of groundwater dynamics with an approximate impulse response function for areal recharge." Advances in Water Resources 30(3): 493-504.
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Strack, Otto D.L., 2017. Vertically integrated flow in stratified aquifers, Journal of Hydrology, 548:794-800, [https://doi.org/10.1016/j.jhydrol.2017.01.039 doi.org/10.1016/j.jhydrol.2017.01.039].
  
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Bakker, M. (2007). "Simulating groundwater flow to surface water features with leaky beds using analytic elements." Advances in Water Resources 30(3): 399-407.
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US EPA, 2016. Analysis of the Transport and Fate of Metals Released from the Gold King Mine in the Animas and San Juan Rivers, Chapter 8 Potential Groundwater Effects, Appendix D. Groundwater Data and Methods (GFLOW), U.S. Environmental Protection Agency, Washington, DC, [https://analyticelements.org/pubs/report/EPA_2017_GKM_Groundwater.pdf EPA/600/R-16/296]

Revision as of 11:43, 8 November 2023

Anaqsim release 2023-1, new partnership with Yellow Sub Hydro

In the past year, Fitts Geosolutions (USA) has teamed with Yellow Sub Hydro (UK) to work on Anaqsim jointly. This is the first release from that joint effort. This release includes many new improvements in computational performance and in outputs. Visit the homepage click here.

Bakker and Post book, Analytical Groundwater Modeling: theory and applications using Python

Bakker, Mark Bakker & Vincent Post, 2022, Analytical Groundwater Modeling: Theory and Applications using Python, CRC Press Taylor & Francis, doi: 10.1201/9781315206134

Strack receives 2021 M. King Hubbert Award

Professor Otto Strack of the University of Minnesota received the National Groundwater Association M. King Hubbert Award 2021

McLane presentation at MODFLOW and More 2019, Golden, Colorado

"AEM --- Stepwise Tool for Analyzing Flow in Fractured Bedrock Aquifers", by Charles McLane, MODFLOW and More, Golden, CO, June 3, 2019 (27 minutes). Click for Youtube video.


Recent Select Publications in the AEM wikibib

Kraemer, Stephen R. 2023. Analytic element domain boundary conditions for site-scale groundwater flow modeling Los Angeles Basin,Groundwater, https://ngwa.onlinelibrary.wiley.com/doi/10.1111/gwat.13322

Strack, Otto DL and Toller, Erik AL. 2022. An analytic element model for highly fractured elastic media, International Journal for Numerical and Analytical Methods in Geomechanics}, 46(2):297--314.

Leaf, Andrew T. and Fienen, Michael N. and Reeves, Howard W. 2021. SFRmaker and Linesink-Maker: Rapid Construction of Streamflow Routing Networks from Hydrography Data, Groundwater, 59(5):761-771, https://doi.org/10.1111/gwat.13095

Ramgraber, Maximilian and Schirmer, Mario, 2021. Hydrogeological uncertainty estimation with the analytic element method, Water Resources Research, 57(6).

Steward, David R, 2020. Analytic Element Method: Complex Interactions of Boundaries and Interfaces, Oxford University Press,

Mohammadi, A and Ghaeini-Hessaroeyeh, M and Fadaei-Kermani, E, 2020. Contamination transport model by coupling analytic element and point collocation methods, Applied Water Sciences, 10(1):1-10.

Koehn, Weston, 2020. Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies, dissertation, Kansas State University.

Haserodt, M.J., Hunt, R.J., Cowdery, T.K., Leaf, A.T., and Baker, A.C., 2019. Simulation of the regional groundwater-flow system in the St. Louis River Basin, Minnesota: U.S. Geological Survey Scientific Investigations Report 2019–5033, 41 p., doi.org/10.3133/sir20195033.

Fitts, Charles R., 2018. Modeling dewatered domains in multilayer analytic element models, Groundwater, Methods Note, 56(4):557-561. July-August, doi:10.1111/gwat.12645.

Strack, Otto D.L., 2017. Analytical Groundwater Mechanics, Cambridge University Press, ISBN: 9781107148833

Strack, Otto D.L., 2017. Vertically integrated flow in stratified aquifers, Journal of Hydrology, 548:794-800, doi.org/10.1016/j.jhydrol.2017.01.039.

US EPA, 2016. Analysis of the Transport and Fate of Metals Released from the Gold King Mine in the Animas and San Juan Rivers, Chapter 8 Potential Groundwater Effects, Appendix D. Groundwater Data and Methods (GFLOW), U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-16/296

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