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روش‌های شناسایی منابع انرژی زمین‌گرمایی بی‌نشان | ||
| فصلنامه سیستم های انرژی پایدار | ||
| دوره 1، شماره 3، تیر 1401، صفحه 283-294 اصل مقاله (888.54 K) | ||
| نوع مقاله: مروری | ||
| شناسه دیجیتال (DOI): 10.22059/ses.2023.354016.1023 | ||
| نویسندگان | ||
| جواد نورعلیئی* 1؛ داور ابراهیمی2 | ||
| 1پژوهشگر ارشد گروه انرژی‌های تجدیدپذیر، پژوهشکدۀ انرژی و محیط زیست، پژوهشگاه نیرو | ||
| 2عضو هیئت علمی گروه انرژی‌های تجدیدپذیر، پژوهشکدۀ انرژی و محیط زیست، پژوهشگاه نیرو | ||
| چکیده | ||
| منابع انرژی زمین‌گرمایی غالباً دارای نشانه‌های سطحی هستند. با این‌وجود، برخی از آن‌ها فاقد نشانۀ سطحی بوده و برآوردها نشان می‌دهد ممکن است در برخی از نقاط کرۀ زمین تعداد آن‌ها بیش از منابع شناسایی‌شده نیز باشد. این دسته از منابع انرژی زمین‌گرمایی را منابع بی‌نشان می‌نامند. عواملی که مانع از پیدایش نشانه‌های سطحی در اطراف منبع مورد بررسی می‌شوند شامل ضخامت بسیار زیاد رسوبات آبرفتی یا سنگ پوشش، میزان بارش‌های جوی فراوان در مناطق استوایی، ساختار تکتونیکی خاص منطقه مورد نظر، عمق بسیار زیاد سطح ایستابی و هدایت زیرزمینی سیال زمین‌گرمایی به دریاها یا اقیانوس‌ها می‌شوند. با توجه به نبود نشانۀ سطحی در اطراف منابع یادشده، جهت شناسایی آن‌ها باید از روش‌های اکتشافی خاصی استفاده کرد. برای شناسایی منابع بی‌نشان باید مطالعات اکتشافی مقدماتی و تکمیلی را طراحی و اجرا کرد. در هر دو دسته از مطالعات یادشده، از اطلاعات زمین‌شناسی، ژئوشیمیایی و ژئوفیزیکی استفاده می‌شود. در مطالعات مقدماتی، ابعاد منطقه بسیار بزرگ است و با انجام آن‌ها محدودۀ منبع زمین‌گرمایی مورد نظر مشخص می‌شود. حال آنکه با اجرای مطالعات تکمیلی، مشخصات دقیق منبع زمین‌گرمایی مورد مطالعه، تعیین می‌شود. تا کنون با انجام پروژه‌های تحقیقاتی، تعداد قابل توجهی منبع زمین‌گرمایی بی‌نشان در غرب آمریکا (ایالت نوادا) شناسایی شده و مورد بهره‌برداری قرار گرفته‌اند. | ||
| کلیدواژه‌ها | ||
| انرژی زمین گرمایی؛ اکتشاف؛ روش های شناسایی؛ منابع بی نشان | ||
| عنوان مقاله [English] | ||
| Exploration Methods for Recognizing Blind Geothermal Resources | ||
| نویسندگان [English] | ||
| Javad Nouraliee1؛ Davar Ebrahimi2 | ||
| 1Renewable Energy Department, Energy and Environment Research Center, Niroo Research Institute (NRI), Tehran, Iran | ||
| 2Renewable Energy Department, Energy and Environment Research Center, Niroo Research Institute (NRI), Tehran, Iran | ||
| چکیده [English] | ||
| Usually, geothermal resources have some surface manifestations. However, there are some resources without any surface evidences of geothermal activity. According to the recent studies, it is believed that in some parts of the earth this type of natural resources is more abundant than the known geothermal resources. These resources are called blind geothermal resources. The main reasons which prevent formation of surface manifestations are very thick cap rock, heavy rainfall in tropical regions, specific structural settings of the region, very deep water table and lateral underground flow of geothermal fluid to the ocean/sea. As blind resources have not any surface manifestations so some individual exploration methods are needed to find them. These methods are divided to two different levels, preliminary and detailed levels. Both of them include geological, geochemical and geophysical studies. In preliminary studies the size of the study area is very large (more than 10,000 km2) and the main target is to find geothermal prospects. In contrast, in detailed studies scientists search for precise characteristics of a given geothermal prospect. So far, the reasonable amount of blind geothermal resources has been determined in western part of the USA especially in Nevada State. | ||
| کلیدواژه‌ها [English] | ||
| geothermal energy, exploration, determination methods, bling resources | ||
| مراجع | ||
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