Waiology • Dec 02, 2011 •
By Daniel Collins For those with an interest in how decadal shifts in climate affect our rivers, as Ross wrote about previously about the IPO, NIWA has a press release on the same work: In 2000, the IPO changed back to the negative phase (as for 1945-77). ‘The whole of South Island is drier now. If you had … Read More
Waiology • Jun 30, 2011 •
By Daniel Collins When you think about hydrology, the first things that come to mind are often rain and rivers, not plants. But plants have a significant effect on how much rain actually reaches the rivers. We see this most readily in the reduction in river flow when grassland is replaced by shrubland or forest. Low flows, mean flow and … Read More
Waiology • Jun 13, 2011 •
By Ross Woods Hydrology is the study of the presence and movement of water over and under the Earth’s surface. Like many sciences, hydrology is often partitioned into sub-disciplines: surface hydrology and groundwater hydrology. This separation shows up in hydrology courses at universities, in research programmes and organisations, and in the way resource management agencies manage water. It’s a natural … Read More
Waiology • Jun 02, 2011 •
By Daniel Collins Water (‘wai’ in te reo Maori) is one of NZ’s most precious resources. We drink it, we eat food grown with it, we power our homes and businesses with it, we play in it, and we are mentally and spiritually uplifted by it and by what it brings. But despite being relatively water-rich on an international stage, … Read More