Исследование электромагнитных (ЭМ) полей удаленных военных передатчиков сверхнизкочастотного (СНЧ) диапазона является одним из самых мобильных и недорогих геофизических методов. В настоящее время этот метод находит применение при поисках различных месторождений, разведке приповерхностных подземных вод, археологических исследованиях и геологическом картировании. Для геофизических исследований может быть использовано несколько десятков СНЧ-передатчиков, находящихся в разных регионах мира. Различные частоты и углы прихода регистрируемого ЭМ-излучения позволяют получить дополнительные преимущества при интерпретации. При исследовании методом СДВР (в западных публикациях используется аббревиатура VLF) используются как электрическая, так и магнитная составляющие ЭМ поля. Обычно предпочтение отдается магнитной компоненте ЭМ поля (H). Широкое использование метода СДВР ограничивалось отсутствием надежных методов устранения временных вариаций ЭМ поля, влияния сильнопересеченного рельефа и процедур количественной интерпретации СДВР-аномалий. Эти проблемы были успешно решены и объединены в единую методическую систему. Для исключения влияния вариаций во времени была разработана специальная фильтрационная процедура. Корреляционный метод позволяет кардинально снизить влияние пересеченного рельефа местности. Для количественной интерпретации аномалий СДВР доказана возможность использования современных методов, разработанных в магниторазведке для сложных геолого-геофизических условий. Наконец, для выявления скрытых объектов на фоне интенсивных геологических помех было предложено использование оригинальных статистических, информационных и вейвлет-алгоритмов. Главные компоненты разработанной интерпретационной системы были успешно применены на полиметаллических и медных месторождениях Кавказа.

 

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