Solar eclipse of March 7, 1970

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Solar eclipse of March 7, 1970
SE1970Mar07T.png
Map
Type of eclipse
Nature Total
Gamma 0.4473
Magnitude 1.0414
Maximum eclipse
Duration 208 sec (3 m 28 s)
Coordinates 18°12′N 94°42′W / 18.2°N 94.7°W / 18.2; -94.7
Max. width of band 153 km (95 mi)
Times (UTC)
Greatest eclipse 17:38:30
References
Saros 139 (27 of 71)
Catalog # (SE5000) 9442

A total solar eclipse occurred on Saturday, March 7, 1970, visible across most of North America and Central America.[1][2][3][4][5]

A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide.

Totality was visible across southern Mexico and the Gulf of Mexico, the southeast Atlantic coast of the United States, northeast to the Maritimes of eastern Canada, and northern Miquelon-Langlade in the French overseas collectivity of Saint Pierre and Miquelon.[6]

Greatest eclipse occurred over Mexico at 11:38 am CST, with totality lasting 3 minutes and 28 seconds. Totality over the U.S. lasted up to 3 minutes and 10 seconds.[7] The media declared Perry as the first municipality in Florida to be in the eclipse direct path.

Unfortunately, inclement weather obstructed the viewing from that location and most of the eclipse path through the remainder of the southern states. There will not be an eclipse with a greater duration of totality over the contiguous U.S. until April 8, 2024, a period of 54 years.

Scientific effects[edit]

This eclipse slowed a radio transmission of atomic time from North Carolina to Washington, D.C.[8]

Images[edit]

Solar1970.gif
Animation of eclipse path (3 minutes per frame)

Related eclipses[edit]

Solar eclipses of 1968–1971[edit]

Each member in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.

Saros 139[edit]

It is a part of saros series 139, repeating every 18 years, 11 days, 8 hours, containing 71 events. The series started with partial solar eclipse on May 17, 1501. It contains hybrid eclipses on August 11, 1627 through December 9, 1825 and total eclipses from December 21, 1843 through March 26, 2601. The series ends at member 71 as a partial eclipse on July 3, 2763. Members in the same column are one exeligmos apart and thus occur in the same geographic area.

The solar eclipse of June 13, 2132 will be the longest total solar eclipse since July 11, 1991 at 6 minutes, 55 seconds.

The longest duration of totality will be produced by member 39 at 7 minutes, 29 seconds on July 16, 2186.[9] This is the longest solar eclipse computed between 4000BC and 6000AD.[10]

Metonic series[edit]

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days).

In popular culture[edit]

CBS broadcast the first total eclipse in color.[11][12][13][14][15][16][17][18]

Notes[edit]

  1. ^ "Spell cast by eclipse". Spokane Daily Chronicle. (Washington). UPI. March 7, 1970. p. 1. 
  2. ^ "Sun, Moon, Earth fall into step". Free Lance-Star. (Fredericksburg, Virginia). Associated Press. March 7, 1970. p. 1. 
  3. ^ "Scientists get great view of solar eclipse in Mexico". Toledo Blade. (Ohio). Associated Press. March 8, 1970. p. 1. 
  4. ^ "Great shadow crosses Earth as millions watch in awe". Sarasota Herald-Tribune. (Florida). Associated Press. March 8, 1970. p. 1. 
  5. ^ Quigg, H.D. (March 8, 1970). "Seaboard 'oohs' as Ol' Sol blinks". Reading Eagle. (Pennsylvania). UPI. p. 1. 
  6. ^ Blakeslee, Alton (March 7, 1970). "Total solar eclipse visible in East today". Pittsburgh Post-Gazette. p. 1. 
  7. ^ Espenak, Fred. "TOTAL SOLAR ECLIPSE OF 1970 MAR 07". NASA Eclipse Website. Goddard Space Flight Center. Retrieved 3 June 2014. 
  8. ^ Sadeh, D. (1971), Phase variation of a very accurate radio frequency signal due to the solar eclipse, J. Geophys. Res., 76(34), 8427–8429, doi:10.1029/JA076i034p08427
  9. ^ Saros Series Catalog of Solar Eclipses NASA Eclipse Web Site.
  10. ^ Ten Millennium Catalog of Long Solar Eclipses, -3999 to +6000 (4000 BCE to 6000 CE) Fred Espenak.
  11. ^ Mike Kentrianakis (10 March 2010). "Solar Eclipse 1970 March 7 CBS News 1 of 6". Retrieved 20 May 2017 – via YouTube. 
  12. ^ Mike Kentrianakis (10 March 2010). "Solar Eclipse 1970 March 7 CBS News 2 of 6". Retrieved 20 May 2017 – via YouTube. 
  13. ^ Mike Kentrianakis (10 March 2010). "Solar Eclipse 1970 March 7 CBS News 3 of 6". Retrieved 20 May 2017 – via YouTube. 
  14. ^ Mike Kentrianakis (10 March 2010). "Solar Eclipse 1970 March 7 CBS News 4 of 6". Retrieved 20 May 2017 – via YouTube. 
  15. ^ Mike Kentrianakis (10 March 2010). "Solar Eclipse 1970 March 7 CBS News 5 of 6". Retrieved 20 May 2017 – via YouTube. 
  16. ^ Mike Kentrianakis (10 March 2010). "Solar Eclipse 1970 March 7 CBS News 6 of 6". Retrieved 20 May 2017 – via YouTube. 
  17. ^ "60 Years Ago: The World's 1st Televised Solar Eclipse". space.com. Retrieved 20 May 2017. 
  18. ^ "NASA Remembers 1970 Solar 'Eclipse of the Century'". space.com. Retrieved 20 May 2017. 

References[edit]

Maps:

News:

Photos and observations