Spectrometric and Imaging Measurements of a Spectacular Gravity Wave Event Observed During the ALOHA-93 Campaign

摘要

During the ALOHA‐93 campaign coincident imaging and interferometric measurements of the near infrared and visible wavelength nightglow emissions were made from Haleakala Crater, Maui. On 10 October, 1993 a most unusual wave event was observed. This disturbance appeared as a sharp “front” followed by several conspicuous wave crests which progressed rapidly through the imager\u27s field of view (180°). As the front passed overhead the interferometer detected a sudden jump in both the OH intensity (\u3e50%) and its rotational temperature (∼20 K) with the temperature increase leading the intensity by almost 15 min. At the same time the imager registered a sharp decrease in the OI(557.7 nm) emission intensity. A description of this remarkable event follows.