Chilean tycoon Sebastian Pinera is being sworn in as the country's President on Thursday. Mrs Bachelet, Chile's first woman President, is constitutionally-barred from seeking re-election. Mr Pinera's presidential win ended 20 years of centre-left rule in Chile.<br/><br/> Michelle Bachelet leaves office with a record 84 per cent popularity rating despite criticism of the government's slow reaction to last month's disaster.<br/><br/> <br/>Meanwhile, Chile's disaster management chief has resigned over the response. Carmen Fernandez is the second Chilean official to leave her post in the aftermath of the February 27 quake. Last Friday, Mrs Bachelet dismissed the head of the navy's Oceanography Service for failing to provide a clear warning of the tsunami.<br/>