* Fundamental seen weak on struggling developed economy
* Euro zone, G20 meeting, surprise U.S. cold snap eyed (Previous PERTH, update throughout)
By Ikuko Kurahone
LONDON, Oct 31 (Reuters) - Oil prices eased lower on Monday, with Brent slipping below $110, as the dollar rose against the yen following the Japanese intervention.
Investors and analysts said this week may see volatile trading due to a spate of economic events -- U.S. Federal Reserve, the European Central Bank and G20 meetings amid deepening concerns over the euro zone debt crisis.
Brent crude LCOc1 fell 33 cents to $109.58 a barrel by 0851 GMT after closing at $109.91 on Friday.
U.S. crude CLc1 fell 69 cents to $92.63 per barrel.
The dollar climbed to a three-month high against the yen on Monday after Japan intervened in currency markets to stem the yen's rise. The U.S. dollar index also rose against a basket of currencies.
"This morning, it is the Japanese intervention in the foreign exchange market. On the macro front, it is a big week this week," Olivier Jakob with Petromatrix said.
Jakob also said trading of price spreads between U.S. crude and Brent and intermonth price differentials remained influential on market movement.
Oil rallied last week on trading of the Brent-U.S. crude spread and due to a deal struck by the euro zone to recapitalise its banks and strengthen its rescue fund.
But persisting uncertainties about the plan have put pressure on the market and Brent crude ended Friday little changed from the week before.
"The key will be this optimism out of the EU. It doesn't translate into demand today and probably not even tomorrow, it's just that mere fact that a plan is at hand is buoying prices," said Jonathan Barratt, managing director of Commodity Broking Services in Sydney.
A reasonable price for crude was between $80 and $100 a barrel, United Arab Emirates Oil Minister Mohammed bin Dhaen al-Hamli said on Monday at the Singapore International Energy Week (SIEW) conference.
He said a high oil price would lead to more investment in alternative energy and also more investment in crude production capacity, which would mean less volatile prices.
Speaking at the same conference, Nobuo Tanaka, former executive director for the International Energy Agency (IEA), said that an oil price of between $70 and $80 was just right, but that prices of $100 or more will derail global economic growth, just as the record prices preceding the 2008 financial crisis did.
Over the weekend, Spain and Portugal called for the United States and other G20 powers to take action to help contain the fallout from the European debt crisis at the G20 summit, set for Cannes, France, on Nov. 3 and 4.
In the United States, mixed economic data did little to support oil prices last week. The market will focus on jobs data later this week to see any signs of economy improvement in the world's largest economy.
The market was also eyeing weather in the U.S. Northeast, which was hit with an early winter storm, leaving more than 3 million households without power on Sunday and killing at least eight people. (Reporting by Rebekah Kebede in Perth and Ikuko Kurahone in London)
