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  Learning Times > News Corner > ÇØ¿Ü´º½ºÄÚ³Ê
 
  Date : 2012-05-07
[AP] Researcher spies odd lava spirals on Mars

È­¼ºÀÇ Æ¯ÀÌÇÑ ¿ë¾Ï¼Ò¿ëµ¹ÀÌ Ã£¾Æ³½ °úÇÐÀÚ
 
LOS ANGELES (AP) ¡ª A researcher has spotted lava flows shaped like coils of rope near the equator of Mars, the first time such geologic features have been discovered beyond Earth.
·Î½º¾ØÁ©·¹½º (AP) ¡ªÇÑ ¿¬±¸¿øÀÌ È­¼º Àûµµ ºÎ±Ù¿¡ ¹åÁÙÀ» ²¿¾Æ³õÀº ¸ð¾çÀÇ ¿ë¾Ï È帧À» ¹ß°ßÇß´Ù. ÀÌ·¯ÇÑ ÁöÁúÇÐÀû Ư¼ºÀÌ Áö±¸ ¹Û¿¡¼­ ¹ß°ßµÈ °ÍÀº À̹øÀÌ Ã³À½ÀÌ´Ù. 
 
The twisty volcanic patterns can be found on Hawaii¡¯s Big Island and on the Pacific seafloor. While evidence for lava flows is present in many places on Mars, none are shaped like this latest find.
È­»êÀÛ¿ë¿¡ ÀÇÇØ ¸¸µé¾îÁø ÀÌ ²¿ÀÎ ¹«´Ì´Â ÇÏ¿ÍÀÌ ¡®ºò¾ÆÀÏ·£µå¡¯¿Í ÅÂÆò¾ç ÇØÀú¿¡¼­ º¼ ¼ö ÀÖ´Ù. ¿ë¾Ï È帧ÀÇ ÈçÀûÀÌ È­¼º °÷°÷¿¡ »êÀçÇÏÁö¸¸ À̹ø¿¡ ¹ß°ßµÈ °Í°ú ¸ð¾çÀÌ À¯»çÇÑ °ÍÀº Çϳªµµ ¾ø´Ù.
 
¡°I was quite surprised and puzzled when I first saw the coils,¡± Andrew Ryan, a graduate student at Arizona State University, said in an email. He reports the discovery in Friday¡¯s issue of the journal Science.
¾Øµå·ç ¶óÀ̾ð ¾Ö¸®Á¶³ª ÁÖ¸³´ëÇÐ ´ëÇпø»ýÀº À̸ÞÀÏ¿¡¼­ ¡°Ã³À½ ÄÚÀϸð¾çÀÇ ÈÖµ¹¾Æ°¨±â´Â ÁöÇüÀ» ºÃÀ» ¶§ »ó´çÈ÷ ³î¶ø°í ¾î¸®µÕÀýÇß´Ù¡±°í ¸»Çß´Ù. ±×´Â ÀÌ »õ·Î¿î »ç½ÇÀ» »çÀ̾ð½ºÁö(òµ) ±Ý¿äÀÏ ÆÇ¿¡ ¹ßÇ¥Çß´Ù.
 
The biggest surprise? The largest Martian lava spiral measured 100 feet (30 meters) across ¡ª bigger than any on Earth. It is further evidence that Mars was volcanically active recently ¡ª geologically speaking, within the past 20 million years.
°¡Àå ³î¶ó¿î °ÍÀº? È­¼º¿¡¼­ ÈÖµ¹¾Æ °¨±â¸ç Èê·¯³»¸° ÃÖ´ë ¿ë¾ÏÀÇ ÆøÀº Áö±¸¿¡ ÀÖ´Â ¾î´À °Íº¸´Ù ³ÐÀº 30¹ÌÅÍ·Î ÃøÁ¤µÆ´Ù. »Ó¸¸ ¾Æ´Ï¶ó ÀÌ´Â È­¼ºÀÌ ÃÖ±Ù Áï ÁöÁúÇлóÀ¸·Î ¸»ÇÏÀÚ¸é Áö³­ 2000¸¸³â À̳»¿¡ È­»êȰµ¿À» Çß´Ù´Â Áõ°Å´Ù.
 
For more than a decade, scientists debated whether this maze of valleys near the Martian equator was sculpted by ice or volcanic processes.
°úÇÐÀÚµéÀº È­¼º Àûµµ Àα٠¹Ì·Î °°Àº °ñÂ¥±âµéÀÌ ¾óÀ½°ú È­»êÀÛ¿ë Áß ¹«¾ùÀ¸·Î Çü¼ºµÆ´ÂÁö 10³â ³Ñ°Ô ³íÀïÀ» ¹ú¿´´Ù. 
 
As part of a class project last year, Ryan analyzed about 100 high-resolution photos of the region snapped by the Mars Reconnaissance Orbiter, which has been photographing the Martian surface since 2006.
À۳⠼ö¾÷ ÇÁ·ÎÁ§Æ®ÀÇ ÀÏȯÀ¸·Î ¶óÀ̾ðÀº Áö³­ 2006³â ÀÌÈÄ È­¼º Ç¥¸éÀ» ÃÔ¿µÇØ¿À°í ÀÖ´Â È­¼º±ËµµÅ½»ç¼±(MRO)ÀÌ ÂïÀº ÀÌ Áö¿ªÀÇ °íÇØ»óµµ »çÁø 100¿© ÀåÀ» ºÐ¼®Çغ¸¾Ò´Ù.
 
One evening, while taking a second look at the images, Ryan zoomed in and noticed the lava coils. He counted 269 spirals.
¾î´À ³¯ Àú³á, »çÁøµéÀ» ´Ù½Ã µé¿©´Ùº¸´ø Áß ¶óÀ̾ðÀº »çÁøÀ» È®´ëÇϸ鼭 ÈÖ¸»¸° ¿ë¾Ï ÈçÀû(lava coil)µéÀ» ¾Ë¾ÆÃ«´Ù. ±×´Â 269°³ÀÇ ÄÚÀϸð¾çÀ» ¼¿ ¼ö ÀÖ¾ú´Ù. 
 
Ryan said he was not surprised the features were overlooked in the past since they blended in with the terrain. The coils looked strikingly similar to Hawaiian lava flows, leading Ryan to conclude that lava ¡ª not ice ¡ª was the driving force.
¶óÀ̾ðÀº ±× Ư¡µéÀÌ È­¼ºÀÇ ÀÌ ÁöÇü°ú ³Ê¹« Èí»çÇØ Áö³ªÃĹö¸° °Í¿¡ ³î¶óÁö´Â ¾Ê¾Ò´Ù°í ¸»Çß´Ù. ÄÚÀϰ°ÀÌ ²¿ÀÎ ¸ð½ÀÀÌ ÇÏ¿ÍÀÌÀÇ ¿ë¾Ï°ú ÇöÀúÇÏ°Ô À¯»çÇÏ°Ô º¸¿© ¶óÀ̾ðÀº ±×°ÍÀÌ ¾óÀ½ÀÌ ¾Æ´Ñ ¿ë¾ÏÀÌ ¿øµ¿·ÂÀÌ µÇ¾î ¸¸µé¾îÁø °ÍÀ̶ó°í °á·ÐÀ» ³»·È´Ù. 
 
Planetary scientist David Paige of the University of California, Los Angeles, said the new work provides convincing evidence that the curious patterns were forged from volcanic activity.
͏®Æ÷´Ï¾Æ´ë ·Î½º¾ØÁ©·¹½ºÄ·ÆÛ½ºÀÇ µ¥À̺ñµå ÆäÀÌÁö Ç༺ÇÐÀÚ´Â ÀÌ »õ·Î¿î ÀÛ¾÷À¸·Î ÀÌ ÀÌ»ó ¾ß¸©ÇÑ ¹«´Ì°¡ È­»êȰµ¿¿¡ ÀÇÇØ ¸¸µé¾îÁ³´Ù´Â Áõ°Å¸¦ È®½ÇÇÏ°Ô °®°Ô µÆ´Ù°í ¸»Çß´Ù.  
 
¡°This illustrates just how complicated Mars¡¯ geologic history appears to really be,¡± Paige wrote in an email. He was not part of the research team.
ÆäÀÌÁö´Â À̸ÞÀÏ¿¡¼­ ¡°ÀÌ´Â È­¼ºÀÇ ÁöÁúÇÐÀû ¿ª»ç°¡ ½ÇÁ¦·Î ¾ó¸¶³ª º¹ÀâÇßÀ»Áö¸¦ º¸¿©ÁÖ°í ÀÖ´Ù¡±°í ½è´Ù. ±×´Â ÀÌ ¿¬±¸ÆÀ ¼Ò¼ÓÀº ¾Æ´Ï¾ú´Ù.
 
It¡¯s believed that rivers of molten lava flowed through the Martian valleys into a broad basin where they settled and formed the coil shapes. The spiral shapes were preserved as the lava cooled.
³ìÀº ¿ë¾ÏÀº È­¼º °ñÂ¥±â¸¦ µû¶ó ³ÐÀº ºÐÁö±îÁö Èê·¯³»·Á¿Í ¸ØÃ߸鼭 ¼Ò¿ëµ¹ÀÌ ¸ð¾çÀ» Çü¼ºÇÑ °ÍÀ¸·Î ¿©°ÜÁø´Ù. ÀÌ ³ª¼±Çü ¸ð¾çÀº ¿ë¾ÏÀÌ ½ÄÀ¸¸é¼­ º¸Á¸µÆ´Ù.

 
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