Содержание подповерхностного водяного льда в кратере Кабео по данным измерений прибора LEND на борту орбитальной миссии NASA LRO

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Abstract

В статье представлены результаты анализа данных российского нейтронного спектрометра LEND (Lunar Exploration Neutron Detector), установленного на борту лунного орбитального аппарата NASA LRO (Lunar Reconnaissance Orbiter). Получена оценка содержания подповерхностного водяного льда в вечно затененной области Кабео-1, расположенной внутри большого кратера Кабео в окрестности южного полюса Луны. В анализе были использованы наблюдения, выполненные с прибором LEND за период с 2009 по 2023 гг. Показано, что нейтронное альбедо поверхности в окрестности и внутри Кабео-1 коррелирует с высотой рельефа и распределением среднегодовых температур. Среднее содержание подповерхностного водяного льда по всей области Кабео-1 было оценено как 0.49±0.05% по массовой доле. Максимальное значение около 0.7% наблюдается на самом дне кратера на участке поверхности, где зафиксирована минимальная среднегодовая температура. Этот участок совпадает с местом проведения ударного эксперимента LCROSS (Lunar Crater Observation and Sensing Satellite), в рамках которого было подтверждено значительное количество водяного льда в приповерхностном веществе Луны.

About the authors

М. Л. Литвак

Институт космических исследований РАН

Author for correspondence.
Email: litvak@mx.iki.rssi.ru
Russian Federation, Москва

И. Г. Митрофанов

Институт космических исследований РАН

Email: litvak@mx.iki.rssi.ru
Russian Federation, Москва

А. Б. Санин

Институт космических исследований РАН

Email: litvak@mx.iki.rssi.ru
Russian Federation, Москва

М. В. Дьячкова

Институт космических исследований РАН

Email: litvak@mx.iki.rssi.ru
Russian Federation, Москва

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