semi-diurnal

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semi-diurnal
ˌsemi-diˈurnal, a. [semi- 6 a.] 1. Astron. Pertaining to, consisting of, or performed in, half the time between the rising and setting of a celestial body. Chiefly in semi-diurnal arc.1594 Blundevil Exerc. iii. xviii. (1597) 154 It deuideth the artificial day and artificiall night each of them into ... Oxford English Dictionary
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semi-nocturnal
ˌsemi-nocˈturnal, a. Astr. [semi- 6 b.] Pertaining to, or accomplished in, half a night.1594, 1664 [see semi-diurnal 1]. 1660 H. More Myst. Godl. vii. xv. 342 The seminocturnal archs of the Ascension of the Ecliptick. 1679 Moxon Math. Dict. 87 By the help thereof [the Meridian], is found..the..Semin... Oxford English Dictionary
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Diurnal cycle
Semi-diurnal cycle A semi-diurnal cycle refers to a pattern that occurs about every twelve hours or about twice a day. wikipedia.org
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semi-annual
semi-ˈannual, a. (and n.) [semi- 6 b. Cf. L. sēmi-annuus in sense 2, and F. semi-annuel.] 1. Recurring every half-year; half-yearly.1794 [see semi-diurnal 2]. 1803 Phil. Trans. XCIII. 470 Semi-annual solar Equation, Precession, and Refraction. 1860 (title) Semi-Annual United States Register. 1866 Cr... Oxford English Dictionary
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Rhythmite
Tidal rhythmites Geologic tidal rhythmites display layered Carboniferous Period beds which record tidal cyclical events such as semi-diurnal, diurnal or wikipedia.org
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Can the position of the moon or the planets affect seismicity? Are ...
Earthquakes are equally as likely to occur in the morning or the evening. Many studies in the past have shown no significant correlations between the rate of earthquake occurrence and the semi-diurnal tides when using large earthquake catalogs. Several recent studies, however, have found a correlation between earth tides (caused by the position of the moon relative to the earth) and some types ...
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Long-period tides
Sun, Moon, and Jupiter by Pierre-Simon de Laplace in the 18th century showed that the periods at which gravity varies cluster into three species: the semi-diurnal The excitation of surface gravity waves is responsible for the high amplitude semi-diurnal tides in the Bay of Fundy, for example. wikipedia.org
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Cyclosia panthona
Description Show semi-diurnal habit and rather elongated narrow body. Abdomen entirely blue green. wikipedia.org
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Earth tide
The largest body tide constituents are semi-diurnal, but there are also significant diurnal, semi-annual, and fortnightly contributions. Along the equator two equally sized peaks (and depressions) impart semi-diurnal force. wikipedia.org
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Eterusia aedea
They have a semi-diurnal habit and rather elongated narrow body. wikipedia.org
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潮汐调和分析
若依周期来分,主要分为全日潮 (diurnal tides)、半日潮 (semi-diurnal tides)等。 潮汐力之中以四种分潮为主,分别是  (主太阴半日周期)、(主太阳半日周期)、(日月合成日周期)以及(主太阴日周期)。 wikipedia.org
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Oecophora bractella
The adult moths fly from May to July depending on the location; they are semi-diurnal and can be encountered during the day, but usually are active at wikipedia.org
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Leptuca thayeri
In this species, it has been determined, regardless of whether the tides are semi-diurnal or mixed, larval crabs will be released after high tide, when wikipedia.org
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Moskstraumen
It originates from a combination of several factors, the dominant being the strong semi-diurnal tides and peculiar shape of the seabed, with a shallow Tides have an amplitude of about and are semi-diurnal at Lofoten, meaning that they rise twice a day; they are the major contribution to the Moskstraumen wikipedia.org
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Slack tide
Dodge tides Some localities have unusual tidal characteristics, such as Gulf St Vincent, South Australia, where the amplitudes of the main semi-diurnal At neap tides the semi-diurnal tide is virtually absent, resulting in the phenomenon known as a "dodge tide"—a day-long period of slack water—occurring wikipedia.org
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