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The Irrawaddy (Ayeyarwady)

We left Bagan by boat heading for Mandalay.  It took 14 hours against the current. 

The travel guide had described the boat as 'nice'.  It was certainly preferable to 12 hours in a bus. It was possible to roam about and there was a sort of tea room on board with a free breakfast. But to call it 'nice' suggests a vessel that is ship-shape and well maintained.  That it was not.  The consolation was that it hadn't far to sink.

The river is monotonous, the only excitement being the really shallow spots where two crew members went forward and poled for the bottom, calling the depth, often less than two metres.  Commercial traffic consists of barges and low draft tugs and these are led by a small boat checking the depth ahead in the shallow reaches.  Several times our boat took advantage of this path finding.

 

On the boat: above:  two views of the morning coastline
below: seeking the bottom; and why is there a bowl of
dead vegetable-matter on the binnacle, good luck charm?

 

The river fisher-folk use quite sophisticated long symmetrical boats, built of planks with a distinctive stern and brow post. They are traditionally poled or paddled but, in this modern world, a proportion have been fitted with a small petrol motor on the stern with a long propeller shaft that drives them along quite quickly.

 

Riverside encampments and fishing boats

 

There were occasional riverside encampments for fishers but the true banks are way off in the distance. It was reminiscent of the Nile.

A highlight was the Pakokku Bridge, an enormously long (3.5 km) combined road and rail bridge that was opened with great fanfare in January 2012.  It has a nominal clearance of 16 metres but the maximum river height is clearly evident on the concrete pylons which, I guess, reduces the clearance to around eleven metres, still ample for most river traffic.  It’s a conventional riveted steel truss bridge that might have been built in the 1930’s. Riveting is very labour intensive. 

Conventional and labour intensive or not, it is obviously of considerable future economic significance as it provides one of the few modern crossings of this river. The Irrawaddy together with its tributaries historically defined Burma, as a distinct from the communities of the other great river systems, the Ganges and Mekong, separated by mountainous regions to the West, North and East.

 

Pakokku Bridge - road and rail - the longest in Myanmar

 

 

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Travel

Bolivia

 

 

In October 2011 our little group: Sonia, Craig, Wendy and Richard visited Bolivia. We left Puno in Peru by bus to Cococabana in Bolivia. After the usual border form-filling and stamps, and a guided visit to the church in which the ‘Black Madonna’ resides, we boarded a cruise boat, a large catamaran, to Sun Island on the Bolivian side of the lake.

Read more: Bolivia

Fiction, Recollections & News

Remembering 1967

 

 

 

 

 

 

 

1967 is in the news this week as it is 50 years since one of the few referendums, since the Federation of Australia in 1901, to successfully lead to an amendment to our Constitution.  In this case it was to remove references to 'aboriginal natives' and 'aboriginal people'.

It has been widely claimed that these changes enabled Aboriginal Australians to vote for the first time but this is nonsense. 

Yet it was ground breaking in other ways.

Read more: Remembering 1967

Opinions and Philosophy

Carbon Capture and Storage

 

 

(Carbon Sequestration)

 

 

The following abbreviated paper is extracted from a longer, wider-ranging, paper with reference to energy policy in New South Wales and Australia, that was written in 2008. 
This extract relates solely to CCS.
The original paper that is critical of some 2008 policy initiatives intended to mitigate carbon dioxide emissions can still be read in full on this website:
Read here...

 

 

 


Carbon Sequestration Source: Wikimedia Commons

 

This illustration shows the two principal categories of Carbon Capture and Storage (Carbon Sequestration) - methods of disposing of carbon dioxide (CO2) so that it doesn't enter the atmosphere.  Sequestering it underground is known as Geosequestration while artificially accelerating natural biological absorption is Biosequestration.

There is a third alternative of deep ocean sequestration but this is highly problematic as one of the adverse impacts of rising CO2 is ocean acidification - already impacting fisheries. 

This paper examines both Geosequestration and Biosequestration and concludes that while Biosequestration has longer term potential Geosequestration on sufficient scale to make a difference is impractical.

Read more: Carbon Capture and Storage

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