Tag

Tides

All articles tagged with #tides

science15 days ago•13 min saved

Moon’s 18.6-year wobble could boost coastal floods on sunny days by mid-2030s

NASA-backed research says the Moon’s 18.6-year orbital wobble will amplify high tides as sea levels rise, pushing three-to-four times as many nuisance flood days onto U.S. coastlines starting in the mid-2030s. Flooding could occur on calm, clear days rather than storms, with regional impact varying based on local geography and subsidence; NOAA projections suggest a wide range (roughly 33–125% more flood days on some coasts). The trend will require localized planning and adaptation for coastal communities as the baseline sea level continues to rise.

via Space Daily|

#coastal-planning #moon-wobble #nuisance-flooding

space24 days ago•12 min saved

Earth’s Tidal Brake Pushes Moon Away, Extending Our Day

Tidal friction is slowly transferring Earth's rotational energy to the Moon, lengthening our days by about two milliseconds per century and pushing the Moon outward by roughly 3.8 centimeters per year, a drift measured for decades with lasers reflecting off Apollo-era lunar mirrors. The mechanism, rooted in gravity and corroborated by geological and historical records, will continue to alter the Earth–Moon dynamic, with long-term implications for day length, eclipses, and climate-linked sea-level changes in coming centuries.

via Space Daily|

#apollo-retroreflectors #earth-rotation #lunar-laser-ranging

science2 months ago•15 min saved

Patagonian Tides Reach Ice-Age Highs, Reshaping Carbon Storage

A study reconstructing 21,000 years of tidal change across the Patagonian Shelf finds tides are currently among the strongest since the end of the Ice Age, with shifts in shelf geometry linked to sea-level rise that affect sediment transport, coastal evolution, habitats, and the ocean’s capacity to store organic carbon.

via Oceanographic Magazine|

#carbon-storage #ice-age #oceanography

science3 months ago•4 min saved

Laser Ranging Confirms Moon’s Inch-by-Inch Retreat from Earth

Scientists confirm the Moon is slowly moving away from Earth at about 1.5 inches per year. Laser-ranging measurements to lunar mirrors show the average distance of roughly 239,000 miles, with small variations as the Moon’s orbit drifts outward due to tidal forces that transfer Earth's rotational energy to the Moon. This gradual recession has lengthened Earth’s days over billions of years and affects tides; in the long term it will reduce the frequency of total solar eclipses, with some estimates suggesting the last such eclipse could occur about 600 million years from now. The Moon formed around 4.5 billion years ago after a colossal impact, and its ongoing drift reflects the long-term evolution of the Earth–Moon system.

via The Daily Galaxy|

#astronomy #earth #moon

travel8 months ago•1 min saved

Chiloé Island's Tides: A Local Legend in Chile

The article describes Chiloé Island in Chile, famous for its rapidly moving tides and local legends of witches, including historical tales of a sorceress named Chillpila who made the tide recede quickly, and highlights the island's colorful houses and cultural stories.

via NPR|

#chile #chiloe-island #local-lore

science10 months ago•6 min saved

November 2025's Biggest Supermoon to Shine Bright This Week

The biggest full moon of 2025, a supermoon, will rise on Nov. 5, appearing larger and brighter due to its closest approach to Earth at perigee. Despite media hype, the size and brightness increase are subtle and often imperceptible to the naked eye, but the event will cause notably large tides. The term 'supermoon' is often misused, as the moon reaches perigee monthly, but this event is the closest in 2025. The moon illusion may enhance the perception of size, and the event offers a spectacular skywatching opportunity.

via Space|

#full-moon #moon-illusion #perigee

science10 months ago•1 min saved

November's Supermoon: The Year’s Brightest and Closest Full Moon

The closest supermoon of 2025 will occur in November, appearing up to 14% larger and 30% brighter than usual, with the moon coming within just under 222,000 miles of Earth, making tides slightly higher but not noticeably different to the naked eye.

via ABC News|

#astronomy #moon #november

science11 months ago•3 min saved

Upcoming Supermoons: A Guide to the Night Sky's Brightest Events

Three consecutive supermoons will illuminate the night sky, starting with the Harvest Moon on October 6, followed by the Beaver Moon on November 5, and the Cold Moon on December 4, offering spectacular views and influencing tides due to their proximity to Earth.

via KSNV|

#astronomy #moon #october-6

weather2 years ago•4 min saved

Severe Weather Alert: Strong Storms and High Winds Expected in South Florida

A strong storm system is developing in the south central Gulf of Mexico and is expected to move towards Florida, bringing rain and strong winds to the area. Thursday will be a First Alert Weather day with winds blowing at 20-25 mph and gusts up to 35-40 mph. Low tides are expected on Thursday and Friday. Saturday will also be a First Alert Weather day with heavy rain and the possibility of scattered thunderstorms. The winds will remain strong throughout the weekend. Coastal flooding and rip currents will be a concern on Sunday. Cooler weather will follow the storm on Monday with highs only in the upper 60s.

via WWSB|

#florida #rain #storm-system

science2 years ago•2 min saved

Debunking Common Misconceptions About Tides

A video by Neil DeGrasse Tyson explains that the tides are not caused by the Moon pulling the ocean towards one shore or another, but rather by the Moon creating an oceanic bulge that the Earth rotates through. When the tide "comes in," it is not the tide coming towards you, but rather you rotating on the Earth into the tide. The Moon's gravitational pull causes deeper waters on both the near and far sides of the Earth, creating a tidal bulge.

via Boing Boing|

#earth #gravitational-pull #moon

science-and-astronomy3 years ago•2 min saved

"Your Guide to Witnessing the Spectacular Super Blue Moon in 2023"

A rare celestial event, a blue supermoon, will occur on Wednesday night, appearing opposite the Sun at 9:36pm EDT. This supermoon is the second full moon in August and will be the closest full moon of the year, appearing brighter and larger than usual. Saturn will also be visible as a bright point near the moon. However, the timing of the supermoon coincides with Hurricane Idalia, potentially exacerbating flooding due to the higher tides caused by the supermoon's gravitational pull.

via Al Jazeera English|

#blue-moon #celestial-event #saturn

skywatching3 years ago•8 min saved

"Rare Super Blue Moon: How to Catch August's Biggest Full Moon of 2023"

On August 30, the second full moon of the month, known as a Blue Moon, will coincide with the moon's closest approach to Earth, making it a Supermoon. While the moon will not actually appear blue, it will be slightly larger and brighter than usual. This event may also cause larger than normal tides, known as perigean spring tides, which could lead to coastal flooding. Additionally, the planet Saturn will be visible near the moon, adding to the celestial spectacle.

via Space.com|

#blue-moon #moon-illusion #perigee

astronomy3 years ago•7 min saved

"Rare Super Blue Moon: A Celestial Spectacle to Watch in August"

In August, skywatchers can look forward to the Perseid Meteor Shower, a Super Blue Moon, and the glittery Milky Way galaxy. The Super Blue Moon occurs when there are two perigee/syzygys in the same month, resulting in a larger and brighter full moon. The Perseid Meteor Shower, caused by debris from comet 109P/Swift-Tuttle, will peak on August 13th and can be seen without any instruments. Additionally, skywatchers are encouraged to find a dark sky to fully enjoy the beauty of the night sky.

via North Country Public Radio|

#astronomy #milky-way #perseid-meteor-shower

science3 years ago•3 min saved

The Evolution of Earth's 19-Hour Day and the Origins of Water

Earth's days were once 19 hours long for a billion years due to the moon's gravitational pull, which was weaker than it is now, according to a new study. The moon's tides slowed Earth's rotation, but during the "boring billion" period, solar and lunar tides were more evenly matched, causing Earth's day length to remain constant. This period coincides with a slowdown in the rise of oxygen in the atmosphere, which may have contributed to the slowdown in evolution of life on Earth during that time. The study used a geological method called cyclostratigraphy to measure historical day length.

via Livescience.com|

#earth #geology #moon

science3 years ago•4 min saved

Moon's gravitational force linked to earthquakes on Earth, study finds.

The moon's gravity may trigger earthquakes on Earth, according to recent studies. While the moon's effect on tides is well-known, its impact on earthquakes has been a subject of debate among scientists. However, with the help of bigger and more comprehensive datasets, researchers have found a small but significant correlation between the moon and earthquakes. The moon's pull on the oceans can cause underwater earthquakes, and it can also put pressure on a volcano's magma chamber, making it more likely to create an earthquake.

via Business Insider|

#earthquakes #gravity #moon