CSIRO has an excellent web site explaining sea level research:
http://www.cmar.csiro.au/sealevel/
Craig - I do not wish to engage you on the previous sublime level - mainly because of your inability to respond to questions, or evidence presented to the contrary view of your position on AGW.
To put it simply, my view is that CC is CYCLICAL, and nothing will move me from that view. I have very good reasons for believing in the cyclical nature of climate variance, but I do not wish to preach to the heathen here - deaf ears are not a good audience.
However, I take your point that the graph is authentic - having the CSIRO logo attached. Interesting that sea levels are shown to have been rising since 1870 on that chart.
Interesting that sea levels also rose at a faster rate between 1930 and 1950. So the current slope is nothing new - indeed it shows a slower rise than in the period I mentioned.
What does bug me, and precipitated my previous responses to your arguments, is that in taking an intractable view (that AGW is a fact) actually is extremely harmful to other avenues of scientific investigation - (that CC is cyclical, and we need to be focusing on the ebb and flow of that sequelae).
The AGW debate has hijacked the science of CC, and diverted funds and resources (knowledge, brainpower and experience) from other practical solutions to potential problematic areas.
Rather than worrying about proving that AGW is somehow responsible for the natural erosion of coastlines around the planet, and blaming AGW for "rising sea levels", why not simply get on with the task of moving the infrastructure, population and resources away from "at risk" areas?
We are not even prepared for a single tsunami on Australia's eastern seaboard - let alone inundation by cyclonic tidal surges, and natural attrition of beach-front real-estate. I would think any government with their hearts in the right place would be planning for this geo-demographic event - that of moving the population to "residences of refuge".
The first step would be to issue a blanket voiding of insurance on all beachfront properties, and a phasing out of insurance cover for all coastal property within 100 metres of the shore-line (or some other strategic distance to be studied and decided upon).
Nothing makes people wake up and take notice faster than a threat to their hip pocket, sadly, and this single action would be all it takes to begin the process.
But I find, so far, that AGW has nothing to do with the historic changes in sea levels - CSIRO seems, in that article, not to have advanced any reason for such rises over the past 140 years.
Is it due to prevailing on-shore winds getting stronger? (N0)
Is it due to shifting ocean currents? (N0)
Is it due to sinking land mass over that time? (Possible)
Is it due to melting polar icecaps over the past 140 years?(Unlikely - we would have heard much more, much earlier, about it)
Is it due to erosion of beaches?(No - the measurements are vertical, not horizontal)
One of the arguments that rails against the melting of the glaciers as a source of general influence on rising seas, is the theory of Post-Glacial-Rebound, where the land mass hosting the melting glacier rises in rebound, and the "fore-bulge regions" are sinking - giving rise to an illusion of rising/falling sea levels.
http://www.cmar.csiro.au/sealevel/sl_drives_geol.html
There is much on that site worth reading - it is an interesting and informative read to be sure. Neil White shows many of the short-term/longer-term influences on sea levels, and I find that educational. But I also find a few things to challenge - eg the rise in sea levels since 1840, by 13.5 centimetres, as measured by a mark on a rock at Port Arthur, Tasmania. Maybe I am alone in thinking that.
I think there are other reasons so far not explored, or possibly dismissed because of a bias towards the belief in AGW, for the 13.5 cm "rise" measurement.
Anyway - thanks for the link.
I am not going to participate further in this thread, because it will degenerate due to the many biases and views, and the hypotheticals and agenda's held by URL's and individuals, and governments.
We, the people (sheeple) will be mislead and brainwashed, as long as there is money to be made from the so-called AGW influence on CC. Alarm bells should have been ringing as soon as Goldman Sachs pushed their way to the front of the queue, in snapping up the ownership of the Carbon Credit trading instruments.
Doesn't that mean anything to you? (Don't answer that - it was rhetorical - but I have said my last word.)
Thanks for the thread ... but I'll pass on it now.