norm hanson's Page

I gave up, way back, trying to apply the Brunn Rule to explain the beach erosion on the venus bay beach. It may still apply to erosion on the andersen Inlet side. I think those modelling sea level r… Continue

Ongoing Erosion is far more obvious on the western side of Andersen Inlet. The beach at the end of doyles road is very clearly erosding constantly. Areas of peat and acid sulphate soil are now also exposted north of Doyles road.

Venus bay was never under any significant threat from a Tsunami triggered by the earth quake off the southern coast of New zealand, as shown on the map above taken from the Australian Warning center. This is for several reasons, venus bay faces away from a direct wave, Wilson pro… Continue

There are a number of flood maps (or predictions of flooding from sea level rise) on the net now. So I have been investigating how they are made. Well The sad fact is they are all pretty much just based on contour colouring, none that I have investigated take into account coastal… Continue

There are two types of wind erosion
1)By Deflation, the wind picks up oarticles of fine grained sand and/or dust, moves and then deposites them elsewhere.
2)By Abrasion, the sandblasting like effect of windblown sand.

Onshore winds can lift sand from the beach and replenish the dunes behind the beach, but not today. Yet more sand is moving southwards along the beach. Continue