HYDRUS Workshop & Short course

June 26 - 29, 2008
University of Tokyo, Faculty of Agriculture

Overview

Reliable modeling of water flow and solute transport through the vadose zone is extremely important as the vadose zone recharges water resources such as groundwater and rivers, serves as a buffer and filter for contaminants, and supports agricultural activities. Numerical modeling is a key tool for analyzing complex physical, chemical, and biological processes in the vadose zone. The HYDRUS software that simulates numerically water and solute movement in soils has received increasing attention worldwide over the last decade because of its flexibility and versatility. This workshop provides all current and future HYDRUS users, such as researchers, practitioners, and students, in various disciplines, opportunity to present and discuss their applications in research, management, and education. It also provides rare opportunity to discuss future modeling needs directly with HYDRUS developers.

The workshop, the very first workshop held in Eastern Asia, will be held at the University of Tokyo on 28 June, 2008. The workshop is organized by the HYDRUS group of JSIDRE. Both oral and poster presentations (preferably in English) are welcome. The workshop proceeding consisting of reports (2 to 8 pages) of the various HYDRUS applications will be published. The deadline for submitting your contribution is June 14, 2008. The template and instruction will be provided after the registration is made. When submitting, please include a title, the authors involved (underline the name of the person giving the presentation), and their affiliations. Contributions will be accepted also from those who are not able to attend the workshop. Feel free to forward this information to anyone who may be interested in the workshop. We hope to see you all in Tokyo soon!

Organizers

• The Japanese Society of Irrigation, Drainage and Rural Engineering (JSIDRE), HYDRUS Group
• SOIL WATER Japan

Workshop location

Lecture Hall 1 in 2 Go-Kan (2nd floor) at University of Tokyo, Faculty of Agriculture. For directions and more information, please visit http://www.a.u-tokyo.ac.jp/english/campus.html

Registration

Please send Name/Affiliation/Email to the organizer via e-mail by June 14, 2008.

Registration fees

2000 JPY (Registration includes: proceedings, coffee breaks, refreshments). The registration fee for those who will be taking the short course will be free.

Title submissions

Both oral and poster presenters need to submit their titles. The deadline to submit the title is June 7, 2008 (the deadline to submit the proceeding paper is June 14, 2008).

Schedule

8:30〜 Registration
9:00〜9:45 Keynote lecture：Jirka Simunek（University of California, Riverside）
New features and new developments in HYDRUS software packages
9:45〜10:30 Keynote lecture：Tsuyoshi Miyazaki（University of Tokyo）
Trends in Soil Physics and Soil Hydrology Related to Surface Zone Sciences
10:30〜10:40 Break
10:40〜12:00 Oral session
Kunio Watanabe （Mie University） Water and heat flow in a directionally frozen silty soil
Hirozumi Watanabe （Tokyo University of Agriculture & Technology） Simulation of fate and transport of pretilachlor in a rice paddy by PCPF-SWMS model
Haruyuki Fujimaki （University of Tsukuba） Determination of irrigation amounts using a numerical model
Yijian Zeng （China University of Geosciences） The Study of Diurnal Soil Water Dynamics in Coarse Sand with Modified HYDRUS1D Code
12:00〜13:10 Lunchtime
13:10〜13:40 Lecture：Jirka Simunek（University of California, Riverside）
A new modeling approach of plant root water and nutrient uptake
13:40〜14:20 Oral session
Masaru Sakai （University of California, Riverside) Surface Boundary Conditions from Meteorological Data Using HYDRUS-1D
Kimihito Nakamura （Kyoto University） Applications and Problems of Numerical Modeling of Nitrogen Transport in Agricultural Soils Using HYDRUS
14:20〜14:30 Break
14:30〜16:00 Brief introductions by poster presenters（5 minutes per person）
16:00〜18:00 Poster Session
18:30〜 Happy hour

List of the poster presenters

P1）Chamindu, D.T.K.K （Saitama University）
Transport and retention of colloid-sized materials in saturated porous media: Experimental and numerical analysis.

P2）Rieko Urakawa （Tokyo University of Agriculture & Technology）
Effects of NO3- adsorption characteristics by subsoil on long-term NO3- leaching from the forest watershed.

P3）Chihiro Kato （University of Tokyo）
Fluctuation of Salt Content of Maize Field in Northwest China under Repetitious Border Irrigation.

P4）Afshin GHAHRAMANI （Tokyo University of Agriculture & Technology）
1D simulation of soil flux movement in a steep slope for a typhoon.

P5）Koji Inosako （Tottori University）
Analysis of Water Movement in a Wick Sampler Using HYDRUS-2D Code.

P6）Tetsuo Yasutaka （Kokusai Environmental Solutions Co., Ltd.）
Risk assessment of soil and groundwater contamination using HYDRUS-1D

P7）Mitsuhiro Inoue （Tottori University）
Determination of soil hydraulic properties of undisturbed core sample using continuous suction outflow method.

P9）Andry Henintsoa Ravolonantenaina （Tottori University）
Inverse Estimation of Clay Soil Unsaturated Hydraulic Conductivity Treated with Organic Material by Multistep Outflow Method

P10）Kaoru Inaba （Takenaka Corporation）
Integrated Modeling of Watershed Hydrologic Fluid and Heat Flows.

P11）Masaru Sakai（University of California, Riverside）
Estimating Hydraulic Property for a Dune Sand and a Volcanic Ash Soil Using Evaporation Method.

P12）Chen Daiwen （Mie University）
Calcium hydroxide leaching through a well-buffered volcanic-ash soil with pH dependent charges．

P13）Anurudda Karunarathna （Saitama University）
Development of a Predictive Expression for Soil Water Repellency Curve Based on Soil Organic Carbon Content.

P14）Taku Nishimura （University of Tokyo）
Water and Salt Behavior in Maize Field under repeating boarder irrigation at Gansu province, China.

P15）Yuhei Hirono （National Institute of Vegetable and Tea Science）
Modeling of water and nitrogen transport in tea fields.

P16）Tadaomi Saito （Tottori University）
Simulation of soil water movement in a water harvesting system with sand ditches.

Objectives

The course begins with a detailed conceptual and mathematical description of water flow and solute transport processes in the vadose zone, followed by a brief overview of the use of finite element techniques for solving the governing flow and transport equations. Special attention is given to the highly nonlinear nature of the governing flow equation.

"Hands-on" computer sessions will provide participants an opportunity to become familiar with the Windows-based RETC, STANMOD, HYDRUS-1D and HYDRUS (2D/3D) software packages. Emphasis will be on the preparation of input data for a variety of applications, including flow and transport in a vadose zone, subsurface drip irrigation, variably-saturated flow in a transect with a stream, and flow and transport to a tile drain. Calibration will be discussed and demonstrated by means of both one- and two-dimensional inverse problems.

Instructors

• Dr. Jirka Simunek is a Professor of Hydrology with the Department of Environmental Sciences of the University of California. His expertise is in numerical modeling of subsurface water flow and solute transport processes and inverse procedures for estimating the hydraulic properties of unsaturated porous media. He has authored and coauthored over 150 peer-reviewed publications and over 20 book chapters. His numeric models are used by virtually all scientists, students, and practitioners modeling water flow, chemical movement, and heat transport through variably saturated soils.
• Japanese translation will be given by Dr. Toride (Mie U), Dr. Saito (TUAT), Dr. Nishimura (U. Tokyo), and Dr. Sakai (UCR)

Course software

The course introduces a new generation of Windows-based numerical models for simulating water, heat and/or contaminant transport in variably-saturated porous media. These include the HYDRUS-1D and HYDRUS (2D/3D) codes for one- and two-dimensional simulations, respectively, the STANMOD code for evaluating solute transport in the subsurface using one- and multi-dimensional solutions of the advection-dispersion equation, the RETC code for evaluating the hydraulic properties of unsaturated media, and the Rosetta code for estimating the soil hydraulic properties (and their uncertainty) from soil texture and related data. HYDRUS-1D and HYDRUS (2D/3D) are supported by interactive graphics-based interfaces for data-preprocessing, generation of unstructured as well as structured finite element grid systems, and graphic presentation of the simulation results. Except for HYDRUS (2D/3D) , all software packages are in the public domain.

Course location

Lecture Hall, Building 2, Tokyo University of Agriculture & Technology, Faculty of Agriculture, Fuchu, Tokyo, Japan. For directions and more information, please visit http://www.tuat.ac.jp/english/about/images/f_map2.pdf

Tentative schedule

The courses will be held 9:00 -16:00 each day.

Registration

Please send Name/Affiliation/Email to the organizer via e-mail by June 14, 2008.

Registration fees

30,000 JPY (20,000 JPY for students). Registration includes: course materials, refreshments, and registration for the workshop. The instruction for payment will be sent to you from the organizer after registration is made.

Please bring your own Windows laptop to the course. There is no need to buy the software prior to the class.

Overview

The course covers advanced topics, such as HP1 (coupled HYDRUS-1D with PHREEQC) and 3D modeling, which are usually not taught in regular short courses. Details will be announced later. We expect that all participants of the advanced course are familiar with HYDRUS or other numerical simulation programs.

Course location

Lecture Hall 114 in Bldg. 7 at University of Tokyo, Faculty of Agriculture. For directions and more information, please visit http://www.a.u-tokyo.ac.jp/english/campus.html

Tentative schedule

9:00 -17:00.

Registration

Please send Name/Affiliation/Email to the organizer via e-mail by June 14, 2008.

Registration fees

TBD.

Please bring your own Windows laptop to the course. There is no need to buy the software prior to the class.

Nobuo Toride
Graduate School of Bioresources
Mie University
Tel: 059-231-9583, Fax: 059-231-9604
E-mail: ntoride<at>bio.mie-u.ac.jp

If cancellations are made before June 21st 2008, the tuition fee will be refunded for all events.