2023 年と 2024 年に米国で日食が見られる場所は?
Based on observations from several NASA missions, the map details the path of the Moon’s shadow as it crosses the contiguous U.S. during the annular solar eclipse on October 14, 2023, and total solar eclipse on April 8, 2024.
These dark paths across the continent show where observers will need to be to see the “ring of fire” when the Moon blocks all but the outer edge of the Sun during the annular eclipse, and the ghostly-white outer atmosphere of the Sun (the corona) when the Moon completely blocks the Sun’s disk during the total eclipse.
Outside those paths, the map also shows where and how much the Sun will be partially eclipsed by the Moon. On both dates, all 48 contiguous states in the U.S. will experience at least a partial solar eclipse (as will Mexico and most of Canada).
Reading the Map
On NASA’s new eclipse map, the paths for the annular eclipse and total eclipse appear as dark bands across the U.S.
Anyone located in the annular eclipse path, from Oregon to Texas, will have a chance to see the annular eclipse if the skies are clear. Anyone located in the total eclipse path, from Texas to Maine, will have a chance to see the total eclipse, weather permitting.
Inside those dark paths are oval shapes with times inside them (yellow ovals for the annular eclipse, purple ovals for the total eclipse). Those ovals show the shape of the Moon’s shadow cast on Earth’s surface at the times shown. People in the areas inside the ovals will see the annular eclipse or total eclipse at that time.
For locations close to the center of the paths, the annular eclipse or total eclipse will last longer than those near the outer edges of the path. Inside each path are white lines that indicate how long annularity or totality will last. For the annular eclipse path, you can find labels (ranging from 3 to 4.5 minutes) near the Nevada-Utah border in the north and between San Antonio and Corpus Christi, Texas, in the south. For the total eclipse path, you can find labels near Presque Isle, Maine, in the north, and between the 2:20 and 2:25 p.m. CST ovals in Mexico in the south.
Viewers in locations outside the paths will not experience a total solar eclipse or annular eclipse, but they may still see a partial eclipse. Lines running parallel to each path indicate how much of the Sun will become covered by the Moon during the partial eclipse. For the annular eclipse, these lines appear faint yellow. For the total eclipse, they’re faint purple. Percentage labels for the annular eclipse lines appear along the left and top edges of the map. The percentage labels for the total eclipse appear along the bottom and right edges of the map. (Tip: The percentages appear at the same angles as the lines.)
Neither eclipse will be contained to the contiguous U.S., though. In the lower right corner of the NASA map, a globe shows the full paths for both eclipses. The annular eclipse (in yellow and black) extends into Mexico, Central America, and South America. The total eclipse (in purple and black) also crosses Mexico and northeastern Canada. Shaded bands (yellow for the annular eclipse and purple for the total eclipse) also show where a partial eclipse can be seen. For example, in October 2023, southeastern Alaska will experience a partial eclipse, while Hawaii will have a chance to see a partial eclipse in April 2024.
Making the Map
Michala Garrison, a member of the Scientific Visualization Studio (SVS) at NASA’s Goddard Space Flight Center, applied her background in geography and cartography to design the map, incorporating information from a variety of NASA sources.
Earth elevation information came from the Shuttle Radar Topography Mission, while maps of the Moon’s shape were supplied by Lunar Reconnaissance Orbiter. The positions of the Sun, Moon, and Earth were found using software and data from NASA’s Navigation and Ancillary Information Facility. Garrison’s SVS colleague, Ernie Wright, used all of this information to calculate the location and shape of the Moon’s shadow.
NASA’s Blue Marble – a global mosaic of satellite images assembled by the NASA Earth Observatory team – provided color for the land. And one particularly unique feature Garrison thought to add along the path of the 2024 total eclipse was nighttime imagery of Earth from NASA’s Black Marble – which shows city lights on the night side of the planet as imaged by the Suomi NPP spacecraft.
One of Garrison’s goals for the map was to inspire people to get to the paths of the annular and total eclipses, which she didn’t do the last time the Moon’s shadow crossed the continental U.S.
2023 年と 2024 年に 2 回の日食が米国を横切ります。2023 年 10 月 14 日に、金環日食がオレゴン州からテキサス州の空に「火の輪」を作ります。 2024 年 4 月 8 日の皆既日食により、テキサス州からメイン州にかけて空が暗くなります。 両方の日に、米国の隣接する 48 州すべてで部分日食が見られます。 NASA のさまざまな情報源からのデータを使用して作成されたこの地図は、両方の食痕を暗い帯として示しています。 これらの経路の外側にある黄色と紫の線は、部分日食中に月が太陽からどれだけ遮られるかを示しています。 このビデオは、マップのさまざまな部分にズームインし、それぞれの日食中に全国の観察者が期待できることを説明するこれらの機能やその他の機能を示しています。
「2017年、私はメリーランドにいたので、部分日食をしていたので、少し見なければなりませんでした」と彼女は言いました。 「でも、その時は何も知りませんでした。たとえば、2023 年にアルバカーキに行きたくなりました。そして 2024 年にはもっと南に行きたいと思いました」
Garrison は、トレイルの内外を問わず人々が日食体験を計画するのに役立つように、マップを美的かつ機能的にするためにいくつかの改訂を行いました。
「多くの試行錯誤が必要でした。読者にとって有用でありながら、圧倒されないようにしたかったのです。それでも、人々の注目を集めるために見るには素晴らしい製品でした。」
「主催者。ポップカルチャー愛好家。熱心なゾンビ学者。旅行の専門家。フリーランスのウェブの第一人者。」
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