the lowest area of the ionosphere, having increased ion density and existing only in the daytime: it begins at an altitude of about 70 km (c. 43 mi) and merges with the E layer
D layer
D layerWebster's New World College Dictionary, Fifth Edition Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Link to this page
Cite this page
MLA Style
"D layer." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/d-layer>.
APA Style
D layer. (n.d.). Retrieved January 16th, 2019, from https://www.yourdictionary.com/d-layer
D layer
noun
The lowest region of the ionosphere, existing only during the day and extending from about 40 to 65 kilometers (25 to 40 miles) above the earth. Also called D region .
THE AMERICAN HERITAGE® DICTIONARY OF THE ENGLISH LANGUAGE, FIFTH EDITION by the Editors of the American Heritage Dictionaries. Copyright © 2016, 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Link to this page
Cite this page
MLA Style
"D layer." YourDictionary, n.d. Web. 16 January 2019. <https://www.yourdictionary.com/d-layer>.
APA Style
D layer. (n.d.). Retrieved January 16th, 2019, from https://www.yourdictionary.com/d-layer
