Products of the NSF CAREER Project

Publications

Peer-reviewed Journal Papers 1. Chu, X., J. Yang, Y. Chi, and J. Zhang. 2013. Dynamic puddle delineation and modeling of puddle-to-puddle filling-spilling-merging-splitting overland flow processes. Water Resources Research. 49(6):3825-3829, doi: 10.1002/wrcr.20286.

2. Chu, X., J. Nelis, and R. Rediske. 2013. Preliminary study on the effects of surface microtopography on tracer transport in a coupled overland and unsaturated flow system. Journal of Hydrologic Engineering, ASCE. 18(10), doi:10.1061/(ASCE)HE.1943- 5584.0000729).

3. Yang, J. and X. Chu. 2013. Effects of DEM resolution on surface depression properties and hydrologic connectivity. Journal of Hydrologic Engineering, ASCE. 18(9), doi:10.1061/(ASCE)HE.1943-5584.0000731).

4. Chu, X., J. Yang, and Y. Chi. 2012. Quantification of soil random roughness and surface depression storage: Methods, applicability, and limitations. Transactions of the ASABE. 55(5):1699-1710.

5. Chi, Y., J. Yang, D. Bogart, and X. Chu. 2012. Fractal analysis of surface microtopography and its application in understanding hydrologic processes. Transactions of the ASABE. 55(5):1781-1792.

6. Sande, L. and X. Chu. 2012. Laboratory experiments on the effect of microtopography on soil-water movement: Spatial variability in wetting front movement. Applied and Environmental Soil Science. Volume 2012, Article ID 679210, 8 pages, doi:10.1155/2012/679210.

7. Sande, L., X. Chu, and T. DeSutter. 2011. A new method for replicating complex microtopographic surfaces in laboratory soil box experiments. Applied Engineering in Agriculture, ASABE. 27(4): 615-620.

Book Chapters 8. Chu, X. 2011. Characterization of Microtopography and its Hydrologic Significance (Chapter 1), p1-14. In: Modeling Hydrologic Effects of Microtopographic Features (ISBN 978-1-61668-628-4), edited by X. Wang. Nova Science Publishers, Inc.

1 Proceeding Papers 9. Liu, Y., J. Yang, and X. Chu. 2013. Infiltration and unsaturated flow under the influence of surface microtopography – model simulations and experimental observations, p468- 475. In: Showcasing the Future, Proceedings of the 2013 ASCE World Environmental and Water Resources Congress, edited by C. L. Patterson, S. D. Struck, and D. J. Murray. American Society of Civil Engineers.

10. Yang, J. and X. Chu. 2012. Effects of surface microtopography on hydrologic connectivity, p339-348. In: Crossing Boundaries, Proceedings of the 2012 ASCE World Environmental and Water Resources Congress, edited by E. D. Loucks. American Society of Civil Engineers.

11. Chu, X., J. Zhang, Y. Chi, and J. Yang. 2010. An improved method for watershed delineation and computation of surface depression storage, p1113-1122. In: Watershed Management 2010: Innovations in Watershed Management Under Land Use and Climate Change, Proceedings of the 2010 Watershed Management Conference, edited by K. W. Potter and D. K. Frevert. American Society of Civil Engineers.

12. Chu, X., J. Zhang, J. Yang, and Y. Chi. 2010. Quantitative evaluation of the relationship between grid spacing of DEMs and surface depression storage, p4447-4457. In: Challenges of Change, Proceedings of the 2010 World Environmental and Water Resources Congress, edited by R. N. Palmer. American Society of Civil Engineers.

13. Yang, J., X. Chu, Y. Chi, and L. Sande. 2010. Effects of rough surface slopes on surface depression storage, p4427-4436. In: Challenges of Change, Proceedings of the 2010 World Environmental and Water Resources Congress, edited by R. N. Palmer. American Society of Civil Engineers.

14. Chi, Y., J. Yang, and X. Chu. 2010. Characterization of surface roughness and computation of depression storage, p4437-4446. In: Challenges of Change, Proceedings of the 2010 World Environmental and Water Resources Congress, edited by R. N. Palmer. American Society of Civil Engineers.

Software Manuals

15. Chu, X., J. Zhang, J. Yang, N. Habtezion, Y. Chi, and Y. Yang. 2013. P2P Modeling System, User’s Manual, Version 1.50, North Dakota State University, 45 pages.

16. Chu, X., J. Zhang, J. Yang, N. Habtezion, Y. Chi, and Y. Yang. 2013. P2P Tools, User’s Manuals, Version 1.50, North Dakota State University, 64 pages.

17. Chu, X., J. Zhang, J. Yang, N. Habtezion, Y. Chi, and Y. Yang. 2013. P2P Education, User’s Manual, Version 1.50, North Dakota State University, 10 pages.

18. Chu, X. 2013. HYDROL-INF Modeling System - Hydrologic Research and Teaching Software, Version 6.10, User’s Manual, North Dakota State University, 80 pages.

2 Brochure

19. Microtopography-Controlled Puddle-to-Puddle (P2P) Overland Flow: Research, Education, and Outreach, P2P Overland Flow Laboratory, North Dakota State University, 6 pages (brochure for K12 and outreach education).

Presentations

Invited Seminars

1. Chu, X. 2012. A New Look at Overland Flow: Why do Puddles Matter? University of Saskatchewan, Saskatoon, Canada.

2. Chu, X. 2008. Windows-based hydrologic and environmental modeling for surface- subsurface systems. North Dakota State University.

3. Chu, X. 2008. How does water move when it rains? Modeling vs. reality. Michigan State University.

4. Chu, X. 2007. Hydrologic and Environmental Modeling: An Application and a New Method. University of California, Davis.

Conference Presentations

5. Chu, X., J. Yang, and D. Bogart. 2013. Modeling of Infiltration and Discontinuous Overland Flow Dynamics under Various Topography, Soil, and Rainfall Conditions. ASCE 2013 World Environmental and Water Resources Congress, May 19-23, 2013, Cincinnati, OH.

6. Liu, Y., J. Yang, and X. Chu. 2013. Infiltration and Unsaturated Flow under the Influence of Surface Microtopography - Model Simulations and Experimental Observations. ASCE 2013 World Environmental and Water Resources Congress, May 19-23, 2013, Cincinnati, OH.

7. Habtezion, N. and X. Chu. 2013. Segmentation of Land Surface Image Using Object- based Method. North Dakota/South Dakota Engineering Research Summit, NDSU, UND, and SDSU, April 23, 2013, Brookings, SD.

8. Liu, Y. and X. Chu. 2013. Wetting Front Movement Affected by Surface Microtopography. North Dakota/South Dakota Engineering Research Summit, NDSU, UND, and SDSU, April 23, 2013, Brookings, SD.

9. Yang, J. and X. Chu. 2013. Surface Topography-dominated Overland Flow Modeling and Preliminary Applications. Joint ND Water Resources Research Institute Fellowship Research and North Dakota Water Quality Monitoring Conference, February 7, 2013, Fargo, ND.

3 10. Chu, X., J. Yang, and N. Habtezion. 2012. Dynamic puddle delineation and threshold- driven hydrotopographic processes. AGU Fall Meeting, December 3-7, 2012, San Francisco, CA.

11. Yang, J., D. Bogart, and X. Chu. 2012. Quantification of the spatio-temporal variability in threshold-controlled overland flow generation processes – A combined experimental and modeling study. AGU Fall Meeting, December 3-7, 2012, San Francisco, CA.

12. Chu, X. and J Yang. 2012. A New Surface Delineation Approach for Characterizing Threshold-Driven Watershed Processes – Introduction to the Puddle-to-puddle (P2P) Modeling System. Fifty Years of Watershed Modeling – Past, Present and Future, Engineering Conferences International, September 24-26, 2012, Boulder, CO.

13. Chu, X. 2012. Surface Ponding and Its Influence on Infiltration and Unsaturated Flow – Introduction to a New Version of HYDROL-INF Software. ASCE 2012 World Environmental and Water Resources Congress, May 20-24, 2012, Albuquerque, NM.

14. Yang, J. and X. Chu. 2012. Effects of Surface Microtopography on Hydrologic Connectivity. ASCE 2012 World Environmental and Water Resources Congress, May 20-24, 2012, Albuquerque, NM.

15. Yang, J. and X. Chu. 2012. Modeling of Microtopography-Controlled Hydrologic Connectivity and Overland Flow Dynamics. North Dakota/South Dakota Engineering Research Summit, NDSU, UND, and SDSU, April 23, 2012, Grand Forks, ND.

16. Bogart, D., J. Yang, and X. Chu. 2012. Runoff Generation of Rough and Smooth Plots under Natural Rainfall Events. North Dakota/South Dakota Engineering Research Summit, NDSU, UND, and SDSU, April 23, 2012, Grand Forks, ND.

17. Chi, Y., J. Yang, and X. Chu. 2012. Application of Fractal Analysis for Surface Characterization and Hydrologic Analyses. North Dakota/South Dakota Engineering Research Summit, NDSU, UND, and SDSU, April 23, 2012, Grand Forks, ND.

18. Chu, X. 2011. State-of-the-art Hydrology Education: Development of Windows-based and Web-based Interactive Teaching-Learning Software. NSF Special Session ED30: Impacts of Over a Decade of CAREER Awards, AGU Fall Meeting 2011, December 5 - 9, San Francisco, California.

19. Chu, X., J. Yang, Y. Chi, Y. Yang, and J. Zhang. 2011. Development of a Windows- based Modeling System for Simulating Microtopography-Controlled Overland Flow. AGU Fall Meeting 2011, December 5 - 9, San Francisco, California.

20. Yang, J. and X. Chu. 2011. Surface Microtopography and Hydrologic Connectivity Analysis. AGU Fall Meeting 2011, December 5 - 9, San Francisco, California.

21. Yang, J. and X. Chu. 2011. Surface Delineation and Hydrologic Connectivity Analysis. ND-SD 2011 Joint EPSCoR Conference, October 4, 2011, Fargo, ND.

4 22. Chu, X., Y. Chi, J. Yang, L. Sande, and D. Bogart. 2011. Microtopographic Characteristics of Soil Surfaces and Overland Flow Generation. ASCE 2011 World Environmental and Water Resources Congress, May 22-26, 2011, Palm Springs, California.

23. Sande L., D. Bogart, and X. Chu. 2011. Infiltration and Surface Runoff: Laboratory Experiments vs. Physically-based Modeling. ASCE 2011 World Environmental and Water Resources Congress, May 22-26, 2011, Palm Springs, California.

24. Chu, X. and R. Rediske. 2011. Metal Transport Modeling for a Coupled Stream-wetland System in West Michigan. ASCE 2011 World Environmental and Water Resources Congress, May 22-26, 2011, Palm Springs, California.

25. Chu, X. 2011. Characterization of Surface Microtopography and Modeling of Overland Flow. North Dakota/South Dakota Engineering Research Summit, NDSU, UND, and SDSU, April 29, 2011, Fargo, ND.

26. Chi, Y., J. Yang, L. Sande, D. Bogart, and X. Chu. 2010. An improved surface delineation method – Puddle delineation program and applications. North Dakota EPSCoR 2010 State Conference, September 29, 2010, Grand Forks, ND.

27. Chu, X., J. Zhang, Y. Chi, and J. Yang. 2010. An improved method for watershed delineation and computation of surface depression storage. ASCE 2010 Watershed Management Conference: Innovations in Watershed Management under Land Use and Climate Change, August 23-27, 2010, Madison, Wisconsin.

28. Chu, X., J. Zhang, J. Yang, and Y. Chi. 2010. Quantitative evaluation of the relationship between grid spacing of DEMs and surface depression storage. ASCE 2010 World Environmental and Water Resources Congress, May 16-20, 2010, Providence, Rhode Island.

29. Yang, J., X. Chu, Y. Chi, and L. Sande. 2010. Effects of rough surface slopes on surface depression storage. ASCE 2010 World Environmental and Water Resources Congress, May 16-20, 2010, Providence, Rhode Island.

30. Chi, Y., J. Yang, and X. Chu. 2010. Characterization of surface roughness and computation of depression storage. ASCE 2010 World Environmental and Water Resources Congress, May 16-20, 2010, Providence, Rhode Island.

31. Chu, X. and J. Zhang. 2009. An automated algorithm for quantifying depression filling and storage. ASCE 2009 World Environmental and Water Resources Congress, May 17- 21, 2009, Kansas City, MO.

32. Yang, J., Y. Chi, X. Chu. 2009. Experimental study on microtopography-controlled overland flow. 3th Annual Joint Student Environmental Conference, July 29-30, 2009, South Dakota State University, Brookings, SD.

5 33. Chi, Y., J. Yang, X. Chu, J. Zhang. 2009. Characterization of surface roughness and computation of depression storage. 3th Annual Joint Student Environmental Conference, July 29-30, 2009, South Dakota State University, Brookings, SD.

34. Chu, X., J. Higgins, and J. Zhang. 2008. Multi-scale DEM-based delineation and quantification of overland flow processes. AGU 2008 Fall Meeting, December 15-19, 2008, San Francisco.

35. Baker, M, J. Putney, M. Tardiff, X. Chu, H. Dulimarta, Y. Tao. 2007. Improving requirements analysis through visualization. West Michigan Regional Undergraduate Science Research Conference, October 20, 2007, Grand Rapids, MI.

Conference Sessions

1. Convener/Chair of Session H41G: Threshold Hydrology: Hydrotopographic Analysis and Modeling, AGU Fall Meeting, December 3-7, 2012, San Francisco.

Windows-based Computer Software

1. Chu, X., J. Zhang, J. Yang, N. Habtezion, Y. Chi, and Y. Yang. 2013. P2P Modeling System, Version 1.50 (latest version). 2. Chu, X., J. Zhang, J. Yang, N. Habtezion, Y. Chi, and Y. Yang. 2013. P2P Tools, Version 1.50 (latest version). 3. Chu, X., J. Zhang, J. Yang, N. Habtezion, Y. Chi, and Y. Yang. 2013. P2P Education, Version 1.50 (latest version). 4. Chu, X. 2011. HYDROL-INF Modeling System - Hydrologic Research and Teaching Software, Version 6.10 (latest version).

Website

1. NSF-P2P: Surface Microtopography & Threshold Hydrology: http://www.ndsu.edu/pubweb/~xuchu/research1.htm