Well apparently I was wrong.
Getting rid of the carbon tax has led to absolutely zero gains in the polls for the government. In fact it may have gotten even worse for them with a possible further slide in polling (although it is within the margin of error)
I consider it quite ironic that Tony Abbott is now considered less trustworthy than Gillard was directly after breaking her carbon tax promise. Nevertheless it was probably to be expected after the budget reveal.
http://blogs.crikey.com.au/pollbludger/2014/07/21/nielsen-54-46-to-labor/
I wouldn't be surprised. Large international disasters (and events) can be strategically utilised to mask the push through of unpopular changes or controversial actions. If I recall correctly Putin's intervention (or invasion) in to Georgia was well timed to coincide with the opening of the Beijing Olympics back in the day. Initial coverage of the conflict was minimal as the worlds media attention was elsewhere.
Disasters can also be an opportunity to increase ones popularity. Anna Blighs response to the Queensland floods for example lead to an increase in her polling. A poor response on the other hand can be quite damaging as it was to Latham in his lack of action during the Indonesian tsunami disaster.
I suspect the Government knows this to be true and is trying to make the most of this opportunity with the hard-line talk and frequent media appearances of Mr Abbott since the recent Malaysian Airlines disaster. In reality Australia's ability to apply pressure on Russia is extremely limited.