Business Trips Overseas - USA(Iowa), Germany(Kharuslue), 1996.7, 研究室訪問, Iowa University, University of Kahruslue
- USA(San Francisco), 1997.8, The 27th Congress of IAHR
- Austria(Graz), 1999.8, The 28th Congress of IAHR
- USA(Mineapolis), 2000.8, 2000 Joint Conference on Water Resources Engineering and Water Resources Planning & Management
- China(Beijing), 2001.9, The 29th Congress of IAHR
- USA(Denver), 2002.8, Hydraulic Measurement & Experimental Methods Conference 2002
- Canada(Vancouver), 2002.8, 研究室訪問, University of British Colombia
- Canada(Vancouver), 2003.1-12, 長期出張, University of British Colombia
- USA(Seattle, Washington), 2004.3, COE派遣研究者, University of Washington
- Australia(Brisbane), 2004.5, The Sixth International Conference on Hydroscience and Engineering (ICHE-2004)
- Poland(Warsaw), 2004.8, The 21st International Congress of Theoretical and Applied Mechanics (ICTAM2004)
- The republic of Korea (Seoul), 2005.9, The 30th Congress of IAHR
- France (Nice), 2006.7, The 7th International Conference on Hydroinformatics 2006
- Portugal (Lisbon), 2006.7, River Flow 2006
- USA (Philadelphia), 2006.7, The Seventh International Conference on Hydroscience and Engineering (ICHE-2006)
- Italy(Venice), 2007.7, The 31st Congress of IAHR
- USA(Arizona), 2007.12, The Fifth International Symposium on Environmental Hydraulics
- USA(San Francisco), 2007.12, 2007 AGU Fall Meeting
- Australia(Adelaide), The 22nd International Congress of Theoretical and Applied Mechanics (ICTAM2008)
- USA(San Francisco), 2008.12, 2008 AGU Fall Meeting
- USA(San Francisco), 2009.12, 2009 AGU Fall Meeting
- USA(San Francisco), 2010.12, 2010 AGU Fall Meeting
- Australia(Brisbane), 2011.6, The 33rd Congress of IAHR
- USA(San Francisco), 2011.12, 2011 AGU Fall Meeting
- USA(San Francisco), 2012.12, 2012 AGU Fall Meeting
- Austria(Vienna), 2013.4, EGU General Assembly 2013
- France(Toulouse), 2013.10, The 19th biennial ISEM Conference (ISEM2013), The International Society for Ecological Modeling
- USA(San Francisco), 2013.12, 2013 AGU Fall Meeting
- USA(Boston), 2014.3, 研究室訪問, MIT
- USA(San Francisco), 2014.12, 2014 AGU Fall Meeting
- Austria(Vienna), 2015.4, EGU General Assembly 2015
- USA(San Francisco), 2015.12, 2015 AGU Fall Meeting
- Austria(Vienna), 2016.4, EGU General Assembly 2016
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