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Oceans & space publications August 1, 2014

Role of Conjugate and Local Terminators for Ionospheric Dynamics at Arecibo

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Ganguly, S., Brum, C. G., Aponte, N., Franco, E., & Gonzalez, S. (2014, August). Role of conjugate and local terminators for ionospheric dynamics at Arecibo. In 2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS) (pp. 1-8). IEEE.

Abstract

Using some recent Plasma drift data at Arecibo, we present evidences of Electric Field (E) changes induced by sunrise and sunset transitions at both local and conjugate regions. Field perpendicular plasma drifts in the F region are used as unambiguous diagnostic of the Electric Field. We present evidences of a downward velocity started around the conjugate sunrise and reaching minimum around the local sunrise, when it turns around and merges with normal daytime behavior, controlled by the dynamo region. During sunset, the upward drift increase at local sunset and shows a dip at the conjugate sunset, when it turns around. Afterwards, the F region is isolated and behaves in regular night time fashion. The entire behavior can be explained by coupled behavior of the E and F region, where the terminator line switches the coupling and affects charge separation at the boundaries.

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