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Assessment of impact on seafloor features in INDEX area

หน่วยงาน National Institute Of Oceanography (NIO), India

รายละเอียด

ชื่อเรื่อง : Assessment of impact on seafloor features in INDEX area
นักวิจัย : Sharma, R.
คำค้น : environmental impact , ocean floor , sub-bottom profiling , underwater photography , benthos , environment management
หน่วยงาน : National Institute Of Oceanography (NIO), India
ผู้ร่วมงาน : -
ปีพิมพ์ : 2543
อ้างอิง : Marine Georesources and Geotechnology, Vol.18; 237-250p. , http://drs.nio.org/drs/handle/2264/1646
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : -
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Observations on seafloor features from subbottom profiling and seabed photography data show that the undisturbed and natural conditions before the benthic disturbance undergo a substantial change after operation of the disturber. The effects can be seen in the form of deep trenches and grooves, formed by the action of the sleds and the pumping of the sediment along its path, as well as sediment piles on either side of the track. Biological traces such as fecal coils, casts, tubes, burrows and trails get obliterated in the areas of disturbance and resedimentation. The smooth, uniform nature of the seafloor observed in predisturbance phase shows microtopographic changes in and around the disturbed area as a result of sediment excavation and resettlement. Vertical mixing as well as lateral transport of sediment alter the geological, biological, physical, and chemical conditions on the seafloor, which need to be monitored over time to assess the process and the time taken for restoration of environmental conditions

บรรณานุกรม :
Sharma, R. . (2543). Assessment of impact on seafloor features in INDEX area.
    : National Institute Of Oceanography (NIO), India.
Sharma, R. . 2543. "Assessment of impact on seafloor features in INDEX area".
    : National Institute Of Oceanography (NIO), India.
Sharma, R. . "Assessment of impact on seafloor features in INDEX area."
    : National Institute Of Oceanography (NIO), India, 2543. Print.
Sharma, R. . Assessment of impact on seafloor features in INDEX area. : National Institute Of Oceanography (NIO), India; 2543.