کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6348154 | 1313641 | 2014 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Monitoring the evolution of Deception Island volcano from magnetic anomaly data (South Shetland Islands, Antarctica)
ترجمه فارسی عنوان
نظارت بر تکامل آتشفشان جزیره فریب اطلاعات از داده های آنومالی مغناطیسی (جزایر شتلند جنوبی، قطب جنوب)
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کلمات کلیدی
ARMTRMSSICM4PMA - LDC هاSecular variation - تنوع سکولارBransfield Strait - تنگه برانسفیلدSouth Shetland Islands - جزایر شتلند جنوبیDeception Island - جزیره فریبLiv - زندگیAntarctica - قاره جنوبگانArc - قوسMagnetic anomalies - ناهنجاریهای مغناطیسیVolcano monitoring - نظارت آتشفشانUnmanned Aerial Vehicle - وسیلهی نقلیهی هوایی بدون سرنشینUAV - پهپاد
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
چکیده انگلیسی
Deception Island is a young and active volcano located in the south-western part of Bransfield back-arc basin. During the last twenty years the Royal Observatory of the Spanish Navy has carried out geophysical surveys in the area. In addition, an unmanned aerial vehicle flight was conducted in 2011 at 800Â m height on the northern half of Deception Island. Analysing and comparing magnetic grids obtained in different periods and tie point readings allow us to detect temporal changes and isolate signals of volcanic origin. Magnetic survey cruises performed in Deception Island's inner bay (1988, 1999 and 2008), and the study of its outer area's magnetic anomaly changes, point to a period of high variations concentrated between December 1989 and December 1999 that may be related to the two main recent periods of seismic activity (1992 and January 1999). From December 1999 to December 2008, there were no significant changes in seismic activity; nevertheless, our data show some magnetic alterations, which might signal the slow progress of a volcanic environment towards equilibrium. Interpreting these magnetic changes called for the construction of several forward models. Additionally, we put forth this kind of study as a suitable, economical and easy method for monitoring an active volcanic system whenever it is possible to measure the magnetic field with accurate positioning, and if the external field components are removed correctly.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Global and Planetary Change - Volume 123, Part B, December 2014, Pages 199-212
Journal: Global and Planetary Change - Volume 123, Part B, December 2014, Pages 199-212
نویسندگان
Manuel Catalán, Yasmina M. Martos, Jesús Galindo-ZaldÃvar, Minoru Funaki,