Lunar year 200712/4/2023 This may be a statistical bias due to the unknown start time of many historical eruptions, and therefore to the small number of events considered 30. The aforementioned studies appear to yield contradictory conclusions as to the nature or existence of correlation between lunar phases (i.e., fortnightly tidal modulation) and volcanic activity. On the other hand, fortnightly tidal modulation does not apparently affect the onset of eruptions at Mauna Loa 25, 29 (Hawai’i). The same correlation with spring tides was reported for Kilauea (Hawai’i, US), Fuego (Guatemala), Ngauruhoe (New Zealand), and Mayon (Philippines) volcanoes 25, 26, 27, 28. In contrast, Sottili and Palladino 24 suggested that the frequency of small explosive events in Stromboli increases during fortnightly tidal maxima (spring tides), that is, close to full or new moon. The same correlation with neap tides was reported for five of the six dome extrusions occurring between 18 in Islas Quemadas volcano 23 (El Salvador). For example, Johnston and Mauk 22 suggested that major eruptions at Stromboli (Italy) start preferentially close to the fortnightly tidal minima (neap tides), that is, when the moon phase is close to the first or third quarter. The most intriguing debate lies on whether fortnightly tides, a ~14-day amplitude modulation of the daily tidal stresses that is related to lunar phases, affect volcanic activity or even force eruptions to occur some specific days instead of others. The possibility that Moon-Sun gravitational forces can influence terrestrial volcanism has been widely debated over the last century 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21. We show through a mechanistic model that the real-time monitoring of seismic sensitivity to lunar cycles may help to detect the clogging of active volcanic vents, and thus to better forecast phreatic volcanic eruptions. ![]() The long-term (~1-year) correlation is found to increase significantly (up to confidence level of 5-sigma) during the ~3 months preceding the 2007 phreatic eruption of Ruapehu, thus revealing that the volcano is sensitive to fortnightly tides when it is prone to explode. Here we study how fortnightly tides have affected Ruapehu volcano (New Zealand) from 2004 to 2016 by analysing the rolling correlation between lunar cycles and seismic amplitude recorded close to the crater. However, previous studies found contradictory results and remain mostly inconclusive. ![]() Fortnightly tides, a ~14-day amplitude modulation of the daily tidal stresses that is associated to lunar cycles, have been suggested to affect volcano dynamics. The Chinese year, which is based on a lunisolar calendar, begins and ends in January or February of the Gregorian calendar.A long-standing question in Earth Science is the extent to which seismic and volcanic activity can be regulated by tidal stresses, a repeatable and predictable external excitation induced by the Moon-Sun gravitational force. Leap years in the Chinese calendar happen approximately every three years when a leap month is added. In fact, the Chinese calendar's origins can be traced as far back as the 14th century BCE. This calendar is older than the Gregorian calendar, which is used by most countries today. The animal signs in the Chinese zodiac are calculated in accordance with the Chinese calendar, which is lunisolar and is based on astronomical observances of the Sun's longitude and the Moon's phases. Setting off firecrackers is hugely popular, and children get hongbao, little red gifts with money inside, from older family members. Couplets are poetic lines about spring and prosperity written in gold or black on red paper. Traditionally, people give their house a thorough spring clean and hang couplets on their doors. ![]() In China, the start of a new year is celebrated with a Spring Festival, the biggest holiday of the year. Not only is one's personality affected by the animal associated with their birth year, but the compatibility of their relationships also depends on their zodiac. Zodiac and Human ConnectionsĪccording to the Chinese zodiac, your birth year tells you more than just your age. ![]() The Year of the Rabbit in 2023 is associated with water. Sincere, tolerant, hard-working, honest, optimistic 12 Animals and 5 ElementsĮach of the 12 years in the Chinese zodiac cycle is represented by an animal and is associated with one of five elemental signs: wood, earth, fire, water, and metal. Business Date to Date (exclude holidays).
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