Dr Willem de Lange
Position: Senior Lecturer, Earth Sciences, Faculty of Science and Engineering, University of Waikato. Field: Earth and ocean sciences, focus on coastal oceanography.
Dr Willem de Lange, an earth scientist and lecturer at the University of Waikato, was born in the Netherlands and moved with his family to New Zealand when he was 18 months old. Since then, he has stayed put in Hamilton.
Echo sounding
Willem de Lange measuring the bathymetry (water depth profile) of Tauranga Harbour using a single-beam analogue echo sounder. The data was used to create an early numerical model of harbour hydrodynamics and sediment transport.
He did his Bachelor of Science, master’s and PhD at the University of Waikato and is now a Senior Lecturer in the Earth and Ocean Sciences Department there.
Willem is on the Tsunami Experts Panel, which advises the government on tsunami warnings.
Getting interested in tsunamis
Willem’s interest in natural history and science was nurtured in part by the Hamilton Junior Naturalists Club, which he joined in his school days. At the club’s Te Kauri Lodge, he learnt about plants, geology and fossils. At high school, he became interested in water as a resource and planned to be a hydrologist.
Beach survey
Undertaking a beach profile survey to analyse changing sand volumes along the New Zealand coast. Surveys in the 1970s used a jet boat to echo-sound the offshore profile and an instrument onshore to measure the boat’s position. Willem is in the bow of the boat, monitoring the echo sounder.
He recounts an incident that got him interested in tsunamis: “I have always been interested in waves and things at the beach. In fact, way back when I was little [1964], we went for a holiday to Pāpāmoa Beach but we had to evacuate because of the tsunami.” His interest in tsunamis led to his MSc, which looked at tsunami hazards.
When Willem was offered lecturing positions in earth sciences and computer science, he chose earth sciences as he wanted to get outside and not be tied to a computer all day, but he says with a laugh, ”Now I spend all my time behind a computer – there are three of them – doing computer modelling and simulation”. However, his involvement in numerical modelling and his research into tsunamis “tied together nicely”.
Willem’s research
Willem’s early research looked at the environmental impact of port development and the design of the harbour bridge in Tauranga. Professor Terry Healy was his MSc supervisor and also supervised Willem’s PhD research on wave-induced sediment transport and beach renourishment (building an artificial beach) at Pilot Bay near Mt Maunganui.
Beach field trip
Third-year coastal studies students from the Department of Earth and Ocean Sciences, University of Waikato, on a field trip at Waihī Beach.
These days, as Willem is involved in teaching and supervising research at the university, he does most of his research through the graduate students he supervises. His new research interest is around solar effects on cliffs. His background on waves comes in handy here as the research involves trying to find a better way of defining the coastal hazards zone for coastal cliffs. This has both national and international application because cliffs form 80% of the world’s coastline.
Willem also supervises projects in the Pacific Islands, especially on climate change hazards.
I think I would get bored specialising in one area. I’m more eclectic. I like knowing how things work, so I like collaborations with lots of different people in lots of different areas.
A love of teaching
An interest in teaching has led to Willem’s involvement in a Teaching & Learning Research Initiative project, where he is looking at better ways of visualising the environment in order to teach about spatial relationships. “I am really interested in teaching – so I like seeing the light bulbs go on, and they suddenly get it and develop a passion for science.”
Willem explains his thoughts on what it means to 'do science' in the article Scientific inquiry: a personal view.
Useful link
The Hamilton Junior Naturalist Club is still inspiring young minds. Read about their significant fossil discovery.
This article is based on information current in 2011 and 2018.
