Signatur:
ZSP-201-79/26
In:
CRREL Report, 79-26
Beschreibung / Inhaltsverzeichnis:
A 19-year record of the annual closing and opening dates of operation of the Lake Champlain ferry at Grand Isle, Vermont, which are controlled by the lake's ice cover, was made available to CRREL. These navigation records accurately approximated the freeze-over and breakup dates for the ferry crossing area between Gordon Landing, Vermont, and Cumberland Head, New York. When compared statistically with water temperature and climatological data for the same years at nearby Lake Champlain locations, the dates allowed accurate predictions of ice formation. From nearby air temperature records, cumulative freezing degree-day (deg C) curves were plotted for each year of record, and ice formation dates and standard deviations were predicted with considerable accuracy. Several methods of predicting ice formation on Lake Champlain were attempted. The most accurate approach used a combination of water temperatures and freezing degree-days. The influence of wind speed on ice cover formation and prediction are also discussed in the report.
Materialart:
Schriftenreihen ausleihbar
Seiten:
v, 21 Seiten
,
Illustrationen
Serie:
CRREL Report 79-26
URL:
https://apps.dtic.mil/docs/citations/ADA079640
URL:
https://hdl.handle.net/11681/9269
Sprache:
Englisch
Anmerkung:
CONTENTS
Abstract
Preface
Introduction
Data tabulation and collection
Air temperatures 11-reezing degree-days
Water temperatures
Closing and opening dates
Results
Air temperature
Freezing degree-days
Water temperatures
Analysis: Attempted methods of predicting ice formation
Predicting air temperatures 8Summer water temperatures
Fall water temperatures and freezing degree-days
Wind speed influence on closing of the lake
Water temperature vs surface air temperature analysis
Prediction of ice-out dates
Conclusions
Literature cited
Appendix A. Freezing degree-day curves with ice notations and watertemperature notations
Appendix B. Summary
Standort:
AWI Archiv
Zweigbibliothek:
AWI Bibliothek
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