Soil liquefaction, fissures, landslides, and other ground failures caused major structural damage in several communities and much damage to property. Six hundred miles (970 km) of fault ruptured at once and moved up to 60 ft (18 m), releasing about 500 years of stress buildup. Lasting four minutes and thirty-eight seconds, the magnitude 9.2 megathrust earthquake remains the most powerful earthquake ever recorded in North America, and the second most powerful earthquake ever recorded in the world since modern seismography began in 1900. Across south-central Alaska, ground fissures, collapsing structures, and tsunamis resulting from the earthquake caused about 131 deaths. The 1964 Alaskan earthquake, also known as the Great Alaskan earthquake and Good Friday earthquake, occurred at 5:36 pm AKST on Good Friday, March 27. Run-up of 67 m (220 ft) at Shoup Bay, Alaska. If there are any errors or problems you find with the tide data for Pole Anchorage, Kosciusko Island, Alaska (or any other tidal station) please let us know.60★4′29″N 147☂0′20″W / 60.908°N 147.339°W / 60.908 -147.339 We built this tool out of a love for tides and astronomical calculations but it is not intended to be used for navigation or any purpose where you would need to rely on the data being accurate. Tide times and heights may not be 100% accurate and they also do not account for local weather conditions. Our tide prediction model for Pole Anchorage, Kosciusko Island, Alaska uses harmonic constants and the nearest available coordinates along with the Lowest Astronomical Tide (LAT) to define the chart datum. Tide Predictions for Pole Anchorage, Kosciusko Island, Alaska A spring tide is when the high and low tide difference is at it's most extreme, the highest and the lowest tides of the month. When we experience a high tide, the Earth, Moon, and Sun are in alignment, and this creats a strong gravitational pull. We call these tides neap tides, and it's when the difference between high and low tide is at its lowest.Ī neap tide happens between two spring tides, twice a month when the first and last quarter Moon appears. This means that the gravitational pull of the Moon and Sun actually work against each other. When we experience a low tide, the Moon is facing the Earth at a right angle to the Sun. These tide types occur twice every month. These are called the spring tide (also known as the King tide) and the neap tide. There are two types, or extremes, of the tide. Inertia wins, and this caused the ocean to bulge out and create a high tide.Īs the Earth spins, different locations on the planet will face the moon, and this rotation is what allows the tides to cycle around the planet. The water moving away from the moon is able to result the gravitational forces trying to pull it in the opposition direction because the gravitational pull is weaker on the far side of Earth. On the opposite side of Earth, the bulge is caused by inertia. The gravitational pull of the moon is strongest on whichever side of the Earth is facing it, annd gravity pulls the oceans towards the moon, resulting in a high tide. Tidal forces of the moon in the open ocean will form as bulges of water that face the moon, but around land mass and coast lines, the water is able to spread out onto land, which creates the tides.Įarth's tides change based on the gravitational pull of the moon as it orbits us. At the lowest point (also known as a trough) reaches the coast, we experience a low tide. When the highest point of the wave (also known as a crest) reaches a coastline, the coast experiences what we call a high tide. The tides are very long waves that move across our oceans, and they are caused by the gravitational pull from the moon and, to a lesser extent, the sun. The data and charts above provide the tide time predictions for Pole Anchorage, Kosciusko Island, Alaska for November 2023, with extra details provided for today, Thursday November 9, 2023.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |