کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8849184 1618518 2017 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Background composition of pore waters in Lake Baikal bottom sediments
ترجمه فارسی عنوان
ترکیب پس زمینه آب های منفی در رسوبات دریاچه بیوکال
کلمات کلیدی
آب پا، رسوبات پایین، ایون ها، ترکیب پس زمینه، دریاچه بایکال،
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات علوم زمین و سیاره ای (عمومی)
چکیده انگلیسی
Bottom sediments were studied from 10 central sites within the pelagic zone of the three basins of Lake Baikal, and 16 sites in other regions of the lake. The composition of pore waters in the first two meters of the sedimentary cover was analyzed at 1-3 cm intervals. It was established that the salt composition of pore waters in the sediments was uniform across the entire lake. Background concentrations of each ion in the pore waters was determined from equations using concentration data profiles obtained from all sites of the three lake basins (1250 samples at 26 sites within the entire lake). Similar to the lake waters, background pore waters of Lake Baikal were dominated by calcium bicarbonate with low mineralization. The total concentration of ions in pore waters increased with depth during diagenetic transformations as did the concentrations of bicarbonate and calcium ions. Biogeochemical processes that affect the chemical composition of pore water in Lake Baikal sediments are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Great Lakes Research - Volume 43, Issue 6, December 2017, Pages 1030-1043
نویسندگان
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