Improved weather conditions have allowed rescuers to step up their efforts to bring aid to survivors¹ of a deadly tsunami² in Indonesia.

印尼天气情况转好，救援人员可以对由海啸造成的受灾者实行救援行动。

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Villagers are returning to the slopes of Mt Merapi amid a lull in volcanic activity

The death toll⁵ has now risen to at least 435, although the number of missing has been halved⁶ after 135 people thought dead were found safe.

The tsunami hit the Mentawai islands on Monday after a 7.7 magnitude quake.

Meanwhile villagers are returning to the slopes of Indonesia's Mt Merapi after a lull（间歇，暂停） in deadly eruptions⁸ there.

Heavy rains and high winds have been plaguing（折磨，使苦恼） the rescue effort since the tsunami struck.

But relief official Joskamatir told Agence France-Presse news agency on Sunday: "The weather is better today, there's no rain. So we hope we will be able to send the supplies quickly. We're also expecting two more helicopters to arrive to air-drop relief supplies to remote areas."

On Saturday, 135 people thought to have perished（死亡，枯萎） were found hiding on higher ground, still afraid to return to the coastal⁹ villages.

One farmer on South Pagai island, Theopilus, 42, told AFP: "We're in dire¹⁰（可怕的，悲惨的） need of more food, tents and blankets. I feel really cold at night as it rains all the time."

More than 23,000 people have been displaced by the tsunami.

About 100 are still thought to be missing.

Meanwhile on the slopes of Mt Merapi in central Java, hundreds of villages were returning to check homes and farms amid a lull in the volcanic activity that killed 36 people last week.

However, scientists say the volcano could burst back into life at any time.

Government volcanologist（火山学家） Subandrio said: "We will even have to evaluate whether we need to widen the exclusion¹¹ zone because we should not downplay（不予重视） the threat. Mount Merapi is extremely dangerous."

A violent eruption⁷ shortly after midnight on Friday poured down ash in Yogyakarta, some 30km (19 miles) away, although no new deaths were reported.

Some 50,000 people are still in temporary shelters.

More than 2,000 troops have been deployed¹² to the area.

The government has pledged millions of dollars for the relief effort.

The vast Indonesian archipelago（群岛，列岛） sits on the Pacific Ring of Fire, one of the world's most active areas for earthquakes and volcanoes.

More than 1,000 people were killed by an earthquake off Sumatra in September 2009.

In December 2004, a 9.1-magnitude quake off the coast of Aceh triggered a tsunami in the Indian Ocean that killed a quarter of a million people in 13 countries including Indonesia, Sri Lanka, India and Thailand.