UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’
ABSTRACT-To examine the hypothesis of a worldwide relation between some lunar periods and tropical disturbances, we collected first-formation dates for 1,013 hurricanes and typhoons and 2,418 tropical storms in both hemispheres. Using the superposed epoch method, we found a lunar synodic cycle (29.5...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.395.3683 2023-05-15T17:31:08+02:00 UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.395.3683 http://docs.lib.noaa.gov/rescue/mwr/100/mwr-100-06-0451.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.395.3683 http://docs.lib.noaa.gov/rescue/mwr/100/mwr-100-06-0451.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://docs.lib.noaa.gov/rescue/mwr/100/mwr-100-06-0451.pdf text ftciteseerx 2016-01-08T02:26:53Z ABSTRACT-To examine the hypothesis of a worldwide relation between some lunar periods and tropical disturbances, we collected first-formation dates for 1,013 hurricanes and typhoons and 2,418 tropical storms in both hemispheres. Using the superposed epoch method, we found a lunar synodic cycle (29.53 days) in North Atlantic hurricane and northwest Pacific typhoon formation dates. About 20 percent more hurricanes and typhoons formed near new and full moon than near the quarters during a 78-yr period, showing a stronger peak at new moon than at full moon. Statistically, the existence of an effect dependent on the lunar synodic cycle is supported by a significance level of 7 percent on unsmoothed data from an analysis of variance for categorical data. During the same 78 yr, North Atlantic tropical storms that did not later become hurricanes tended to form near the lunar quarters. Several other categories of tropical storms were not clearly related to the synodic month. Severe tropical storms in two portions of the Indian Ocean over 75 yr formed more often several days after syzygy and quadrature, but this and other severe tropical storm results lack definition, probably due to poor data. Theoretical calculations of the lunar-solar gravitational tide showed that the anomalistic lunar cycle affects only the amplitude and not the timing of extrema. No marked anomalistic or latitude components in hurricane formation were found. 1. Text North Atlantic Unknown Indian Pacific |
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ftciteseerx |
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English |
description |
ABSTRACT-To examine the hypothesis of a worldwide relation between some lunar periods and tropical disturbances, we collected first-formation dates for 1,013 hurricanes and typhoons and 2,418 tropical storms in both hemispheres. Using the superposed epoch method, we found a lunar synodic cycle (29.53 days) in North Atlantic hurricane and northwest Pacific typhoon formation dates. About 20 percent more hurricanes and typhoons formed near new and full moon than near the quarters during a 78-yr period, showing a stronger peak at new moon than at full moon. Statistically, the existence of an effect dependent on the lunar synodic cycle is supported by a significance level of 7 percent on unsmoothed data from an analysis of variance for categorical data. During the same 78 yr, North Atlantic tropical storms that did not later become hurricanes tended to form near the lunar quarters. Several other categories of tropical storms were not clearly related to the synodic month. Severe tropical storms in two portions of the Indian Ocean over 75 yr formed more often several days after syzygy and quadrature, but this and other severe tropical storm results lack definition, probably due to poor data. Theoretical calculations of the lunar-solar gravitational tide showed that the anomalistic lunar cycle affects only the amplitude and not the timing of extrema. No marked anomalistic or latitude components in hurricane formation were found. 1. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ |
spellingShingle |
UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ |
title_short |
UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ |
title_full |
UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ |
title_fullStr |
UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ |
title_full_unstemmed |
UDC 661.690.n:626.624:661.616.W Observed Relations hips Bet ween 1 u nar Tidal Cycles and Formation of Hurricanes and Tropical Storms’ |
title_sort |
udc 661.690.n:626.624:661.616.w observed relations hips bet ween 1 u nar tidal cycles and formation of hurricanes and tropical storms’ |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.395.3683 http://docs.lib.noaa.gov/rescue/mwr/100/mwr-100-06-0451.pdf |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
http://docs.lib.noaa.gov/rescue/mwr/100/mwr-100-06-0451.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.395.3683 http://docs.lib.noaa.gov/rescue/mwr/100/mwr-100-06-0451.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766128472795643904 |