http://www.ambitgambit.com/2007/05/28/not-the-worst-drought-in-a-1000-years/ Ambit Gambit Sat, 11 Feb 2012 19:31:04 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://www.ambitgambit.com/2007/05/28/not-the-worst-drought-in-a-1000-years/comment-page-1/#comment-1657 Rachelle Wed, 30 May 2007 13:42:17 +0000 http://localhost/ambit/?p=2059#comment-1657 There is also research that has been done on locked lakes in SA and Victoria, including the Blue Lake at Mount Gambier. These lakes have no water flowing in or out - fluctuations come only from rainfall and evaporation. The testing of concentration of certain minerals in plant matter embedded in the mud shows the amount of water in the lake at that time - eg higher concetrations = less water. Cores taken from the mud indicate that we are in a reasonably wet zone of the last 5000 years. So it appears that we do have climate change, but its not necessarily caused by humans. We need to do more work on understanding why these patterns and changes occurred in the past before we can accurately model what is likely to happen in the future. There is also research that has been done on locked lakes in SA and Victoria, including the Blue Lake at Mount Gambier. These lakes have no water flowing in or out – fluctuations come only from rainfall and evaporation. The testing of concentration of certain minerals in plant matter embedded in the mud shows the amount of water in the lake at that time – eg higher concetrations = less water. Cores taken from the mud indicate that we are in a reasonably wet zone of the last 5000 years.
So it appears that we do have climate change, but its not necessarily caused by humans. We need to do more work on understanding why these patterns and changes occurred in the past before we can accurately model what is likely to happen in the future.

]]> http://www.ambitgambit.com/2007/05/28/not-the-worst-drought-in-a-1000-years/comment-page-1/#comment-1658 Bill Wed, 30 May 2007 10:23:24 +0000 http://localhost/ambit/?p=2059#comment-1658 Not convinced that sediment samples from one lagoon are any reasonable proxy for cyclone activity in the Carribean. Apart from strength and frequency of cyclones, deposition record will be very effected by how close the cyclone's path was, direction of approach, tidal situation at the time and sea level, (since we are talking on a scale of centuries, sea level will have varied). The width and height of that sandbar, in particular, could have a major effect on sand deposition in the lagoon. Sandbars are very variable over time. Not convinced that sediment samples from one lagoon are any reasonable proxy for cyclone activity in the Carribean. Apart from strength and frequency of cyclones, deposition record will be very effected by how close the cyclone’s path was, direction of approach, tidal situation at the time and sea level, (since we are talking on a scale of centuries, sea level will have varied).
The width and height of that sandbar, in particular, could have a major effect on sand deposition in the lagoon. Sandbars are very variable over time.

]]> http://www.ambitgambit.com/2007/05/28/not-the-worst-drought-in-a-1000-years/comment-page-1/#comment-1659 Pete Tue, 29 May 2007 11:31:55 +0000 http://localhost/ambit/?p=2059#comment-1659 I would suggest that the UK Government acceptance of climate change, and the resulting request for and endorsement of the Stern report, could be linked to their push for nuclear power generation. A widespread acceptance of climate change would certainly assist the introduction of nuclear power-plants in otherwise unreceptive areas. I would suggest that the UK Government acceptance of climate change, and the resulting request for and endorsement of the Stern report, could be linked to their push for nuclear power generation.
A widespread acceptance of climate change would certainly assist the introduction of nuclear power-plants in otherwise unreceptive areas.

]]> http://www.ambitgambit.com/2007/05/28/not-the-worst-drought-in-a-1000-years/comment-page-1/#comment-1660 Bob Buick Tue, 29 May 2007 06:48:56 +0000 http://localhost/ambit/?p=2059#comment-1660 Like the Y2K scare thousands are making BIG $$$$ with this Greenhouse crap! Like the Y2K scare thousands are making BIG $$$$ with this Greenhouse crap!

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