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Çѱ¹È¯°æ»ý¹°ÇÐȸ / v.22, no., 2004³â, pp.93-102
ÁöÈ­ÇÐÀû ÀÚ·á¿¡ ±Ù°ÅÇÑ ±¤¾ç¸¸ Ç¥ÃþÅðÀû¹°ÀÇ Æ¯¼º°ú Àú¼­È¯°æ
( Characteristics of Surficial Sediment and Benthic Environments Based on Geochemical Data in Gwangyang Bay, Korea )
Çö»ó¹Î;ÆØ¿ìÇö;ÀÌÅÂÈñ; Çѱ¹Çؾ翬±¸¿ø ³²ÇØ¿¬±¸¼Ò;Çѱ¹Çؾ翬±¸¿ø ³²ÇØ¿¬±¸¼Ò;Çѱ¹Çؾ翬±¸¿ø ³²ÇØ¿¬±¸¼Ò;
 
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±¤¾ç¸¸ Ç¥ÃþÅðÀû¹°ÀÇ ÁöÈ­ÇÐÀû Ư¼º ÀÌÇØ¿Í Àú¼­È¯°æÀ» Æò°¡Çϱâ À§ÇØ ÃÑ 110°³ÀÇ Ç¥ÃþÅðÀû¹°À» ºÐ¼®ÇÏ¿´´Ù. ºÐ¼®°á°ú ÅðÀû»óÀº ´Ù¼¸ °³ÀÇ ÅðÀû»ó(´ÏÁú, »ç´ÏÁú, »çÁú, ´Ï»çÁú ¹× ¿ª»çÁúÀ» Æ÷ÇÔÇÑ ´ÏÁú ÅðÀû»ó)À¸·Î ºÐ·ù ÇÒ ¼ö ÀÖ¾ú´Ù. ±×·¯³ª ÀüüÀûÀ¸·Î ´ÏÁú ÅðÀû»óÀÌ ±¤¾ç¸¸ÀÇ ÁÖµÈ ÅðÀû»óÀ¸·Î ³ªÅ¸³µ´Ù. À¯±â¹°ÀÇ C/N ¹× C/S¿¡ ±Ù°ÅÇÑ Àú¼­È¯°æÀº À¯±â¹°ÁßÀÇ C/Sºñ°¡ ÀϺΠ½Ã·á¿¡¼­ 2.8ÀÌ»óÀ» º¸À̰í ÀÖ´Â °ÍÀ¸·Î º¸¾Æ ÀϺΠÁö¿ª¿¡¼­´Â ¹«»ê¼Ò ȯ°æ»óÅ¿¡ ÀÖÀ½À» º¸À̰í ÀÖ´Ù. ÅðÀû¹°Áß È²È­¼ö¼Ò ÇÔ·®Àº ÃÖ°í 367 ppm¿¡¼­ ÃÖ¼Ò ¾à 1 ppm(Æò±Õ 92 ppm)À¸·Î ³ªÅ¸³µ°í Áö¿ª¿¡ µû¶ó ½ÉÇÑ º¯µ¿À» º¸À̰í ÀÖ´Ù. »êȭȯ¿ø¿¡ ¹Î°¨ÇÑ ¿ø¼Òµé(Mn, V, Mo, Cr)°£ÀÇ »ó°ü°ü°è´Â Á¶»çÁö¿ª Áß ¹¦µµ ¾ÈÂÊ Áö¿ª¿¡¼­ °­ÇÑ ¾çÀÇ »ó°üÀ» º¸À̰í ÀÖ´Ù. ³ôÀº TOCÇÔ·®°ú ³ôÀº Ȳȭ¼ö¼Ò ÇÔ·® ¹× »êȭȯ¿ø¿¡ ¹Î°¨ÇÑ ¿ø¼ÒÀÇ ³ôÀº ³óÃàÀÌ ¹¦µµ ¾ÈÂÊÀÇ ½Ã·á¿¡¼­ °øÅëÀûÀ¸·Î ³ªÅ¸³ª´Â Ư¡À» º¸À̰í Àִµ¥ ÀÌ´Â ¹¦µµ¾ÈÂÊ Áö¿ªÀÌ ºÎºÐÀûÀ¸·Î ¹«»ê¼Ò »óÅ·ΠÀ¯ÁöµÇ°í ÀÖÀ½°ú µ¿½Ã¿¡ ÀáÀçÀûÀ¸·Î ¿À¿°µÇ¾úÀ½À» Áö½ÃÇϰí ÀÖ´Ù.
A total of 110 surface sediment were analyzed in order to understand the geochemical eharacteristics of the surface sediments and to evaluate the benthic environmental condition of Gwangyang Bay. The surface sedimentary distribution can be classified by five facies; mud (M), sandy mud (sM), sand (S), muddy sand (mS) and gravely sand mud ((g)sM). However, mud face is the predominant sedimentary feature of the Gwangyang Bay. The benthic environment based on total organic carbon/total nitrogen (C/N) and total organic carbon/total sulfur (C/S) ratios of organic matter showed that anoxic environment is prevailed in some parts of the study area because the C/S ratio of organic matter was higher than 2.8. The hydrogen sulfide (H$_2$S) content showed extreme variability from site to site. It varies from 307 ppm to 1 ppm (average, 92 ppm). The inter-relationship of redox-sensitive elements (Mn, V, Mo and Cr) showed a relatively strong positive relationship with high accumulation in the sediment at the inner sites of the Bay (left of Myo Island). High content of TOC and hydrogen sulfide, and a high accumulation rate of redox- sensitive element were predominant characteristics in the sediments at the inner sites of the Bay (left of Myo Island), suggesting that this area is in an oxygen deficient, and potentially polluted condition.
 
Ű¿öµå
Gwangyang Bay;Geochemistry;Benthic environments;
 
ȯ°æ»ý¹° / v.22, no., 2004³â, pp.93-102
Çѱ¹È¯°æ»ý¹°ÇÐȸ
ISSN : 1226-9999
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922292960)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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