PDS_VERSION_ID = PDS3 RECORD_TYPE = STREAM OBJECT = TEXT PUBLICATION_DATE = 2013-05-13 NOTE = "This file describes known errors or deficiencies in this archive volume set." END_OBJECT = TEXT END Users are encouraged to provide comments back to the MARSIS AIS team if errors or omissions are found either in data or in documentation. Please send comments by e-mail or U.S. mail to David Morgan, david-morgan@uiowa.edu Department of Physics and Astronomy The University of Iowa Iowa City, IA 52242-1479 USA General disclaimer ================== All trademarks are acknowledged as the property of their respective owners. The producers and publishers of this archive do not endorse any commercial entities which may be mentioned for clarity. Variances applying to this archive ================================== A web link to http://validator.w3.org/check/referer is associated with the "Valid HTML 3.2" image at the bottom of html documents. This link provides a mechanism for checking conformance of the document to html standards, but will only work if the document is being viewed via a web-accessible (e.g. http:) URL. If the file is accessed as a local file system reference (e.g. file:) URL, then, of course, the remote validation service will not be able to access the file in order to check it. The following erratum in all mission phases of MARSIS AIS archived data has been noted: All planet-based coordinates have been archived in planetographic rather than planetocentric coordinates. This discrepancy entails (1) Longitude is given in west rather than east longitude. To convert archived west longitude WL to east longitude EL, subtract from 360; i. e., EL = 360 - WL (2) Latitude is based on normal to a representative ellipsoid surface rather than the radius vector from the center of the planet. (3) Altitude is taken along the normal to the ellipsoid surface, from the spacecraft to the ellipsoid surface, rather than along the radius vector from the spacecraft to the center of the planet, down to the nominal planetary radius of 3396.2 km. Note regarding derived products =============================== This data set does not contain derived electron densities, density profiles, etc. For documents relating to the derivation of these parameters refer to the files included in the DOCUMENTS directory. Update history: =============== Date Change ---------- ------------------------------------------------------------ 2013-05-13 Errata updated to describe use of planetographic coordinates