کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10121382 | 1641621 | 2005 | 22 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An absolute palaeointensity record from SOH1 lava core, Hawaii using the microwave technique
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Absolute palaeointensity results were obtained from 392 samples (166 of 241 flows) from the upper 779Â m of the Scientific Observation Hole 1 (SOH1) basalt core, Kilauea volcano, Hawaii, using the microwave palaeointensity technique. Based on K-Ar dates and a previously published age model, this covers the last 45Â ka thus giving a high-resolution record of geomagnetic intensity in Hawaii. Comparisons with other Hawaiian absolute palaeointensity data show similar trend of higher intensity than present day for the last 3Â ka and then a general decrease in intensity over the last 45Â ka, though this study reports consistently lower palaeointensity values. Direct comparison with previous Thellier data from the SOH1 core shows some discrepancies between the two methods, with the Thellier data yielding generally higher palaeointensity estimates than the microwave data. In view of these discrepancies between the two methods, the introduction of raw palaeointensity data into the public domain is suggested.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics of the Earth and Planetary Interiors - Volume 148, Issues 2â4, February 2005, Pages 193-214
Journal: Physics of the Earth and Planetary Interiors - Volume 148, Issues 2â4, February 2005, Pages 193-214
نویسندگان
Martin N. Gratton, John Shaw, Emilio Herrero-Bervera,