* Dollar's downtrend for longer term still seen intact

* Euro weighed by talk of yuan rise, long positioning

* Market eyes euro zone Q3 GDP at 1000 GMT

* US President Obama kicks off Asia tour; trade, FX in focus

By Kaori Kaneko

TOKYO, Nov 13 (Reuters) - The dollar clung to gains in Asia on Friday after another sporadic bout of profit-taking in riskier trades that has characterised the currency's eight-month bear trend.

But traders said dollar short-covering, prompted by softer equities and a fall in oil, had slowed in Asian time, and the U.S. currency's broad weakness was likely to continue over the longer term.

Speculation about a yuan revaluation was also heating up, traders said, after China's central bank referred this week to a new set of benchmarks for determining its value and as U.S. President Barack Obama began a trip to Asia. [ID:nOBAMAASIA]

Dealers and analysts were sceptical, however, that any change would happen soon. In the meantime, investors were questioning how long the dollar's bounce would last.