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PERTH, Australia/KUALA LUMPUR, April 6 (Xinhua) -- Chinese and Australian ships have picked up acoustic1 signals while searching for missing Malaysia Airlines Flight MH370 in the southern Indian Ocean.
The underwater detection represents an "important and encouraging lead," said Angus Houston on Sunday, whose Joint2 Agency Coordination3 Center (JACC) is responsible for coordinating4 the massive multinational5 hunt far west of Australia's coast.
However, Houston cautioned that the acoustic events need to be treated carefully as "we are working in a very big ocean and within a very large search area."
Possible pings present encouraging lead in MH370 search
Chinese vessel6 Haixun 01 detected a pulse signal with a frequency of 37.5 kHz -- the same as those emitted by flight recorders -- on Friday in a key search area, and redetected the pings for 90 seconds on Saturday just 2 km away from the original spot.
Following the detection, the JACC asked British vessel HMS Echo and Australian ship Ocean Shield, both equipped with black box detectors7, to sail to the area and help verify the signals.
Meanwhile, Houston said Ocean Shield itself picked up an underwater signal on Sunday some 300 nautical8 miles away from the location of Haixun 01, and was investigating the acoustic encounter.
The detection of the pings came just days before the batteries of the missing jetliner's black box is expected to expire. The Boeing 777 plane has disappeared for 30 days, and that is how long those batteries normally last.
Even if the ill-fated jet was found where Haixun 01 detected the signal, it would be "incredibly challenging and very demanding" as well as time-consuming to recover it, as the water there is about 4.5 km deep, noted9 Houston.
In parallel with the search, Malaysian authorities are also pressing ahead with investigation10 in order to find out what really happened to the plane.
Citing expert analysis of satellite, radar11 and other data available, they concluded earlier that the ill-fated March 8 flight from Kuala Lumpur to Beijing ended in the southern Indian Ocean.
According to previously12 revealed information, the Boeing 777 aircraft turned back after disappearing from civilian13 radar over South China Sea, and was detected by Malaysian military radar in the northern Strait of Malacca before vanishing from all radar screens.
After reviewing radar data provided by neighboring countries, investigators14 have now found that the jetliner curved north of western Indonesia before turning south toward the southern Indian Ocean, U.S. broadcaster CNN on Sunday quoted an unnamed Malaysian official as saying.
The latest finding added to the already prevailing15 assumption that the plane was flown deliberately16 along a route designed to avoid radar detection. But so far investigators have not ruled out other possible causes of the plane's diversion, such as mechanical problems.
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1
acoustic
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adj.听觉的,声音的;(乐器)原声的 | |
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2
joint
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adj.联合的,共同的;n.关节,接合处;v.连接,贴合 | |
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3
coordination
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n.协调,协作 | |
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4
coordinating
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v.使协调,使调和( coordinate的现在分词 );协调;协同;成为同等 | |
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5
multinational
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adj.多国的,多种国籍的;n.多国籍公司,跨国公司 | |
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6
vessel
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n.船舶;容器,器皿;管,导管,血管 | |
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7
detectors
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探测器( detector的名词复数 ) | |
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8
nautical
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adj.海上的,航海的,船员的 | |
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9
noted
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adj.著名的,知名的 | |
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10
investigation
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n.调查,调查研究 | |
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11
radar
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n.雷达,无线电探测器 | |
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12
previously
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adv.以前,先前(地) | |
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13
civilian
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adj.平民的,民用的,民众的 | |
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14
investigators
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n.调查者,审查者( investigator的名词复数 ) | |
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15
prevailing
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adj.盛行的;占优势的;主要的 | |
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16
deliberately
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adv.审慎地;蓄意地;故意地 | |
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17
remains
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n.剩余物,残留物;遗体,遗迹 | |
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