We investigate lower hybrid wave trapping in cylindrically symmetric density depletions in the electrostatic approximation. Our investigation is inspired by previous observations of such trapping by spacecraft in the auroral region at altitudes up to about 2000km. and the recent discovery of this phenomenon at altitudes above 20000km in the inner magnetosphere. No particular shape is ... https://www.chiggate.com/shades-eq-09gi-hamptons-supply/