The Solar Storm of 1859—known
as the Carrington Event—was a powerful geomagnetic solar storm during solar
cycle 10 (1855–1867). A solar coronal mass ejection hit Earth's magnetosphere
and induced one of the largest geomagnetic storms on record, September 1–2,
1859. The associated "white light flare" in the solar photosphere was
observed and recorded by English astronomers Richard C. Carrington (1826–1875)
and Richard Hodgson (1804–1872).
Studies have shown that a solar storm of this magnitude occurring today would likely cause more widespread problems for a modern and technology-dependent society. The solar storm of 2012 was of similar magnitude, but it passed Earth's orbit without striking the planet.
On September 1–2, 1859, one of the largest recorded geomagnetic storms (as recorded by ground-based magnetometers) occurred. Aurorae were seen around the world, those in the northern hemisphere as far south as the Caribbean; those over the Rocky Mountains in theU.S.
were so bright that their glow awoke gold miners, who began preparing breakfast
because they thought it was morning. People in the northeastern United States
could read a newspaper by the aurora's light. The aurora was visible as far
from the poles as Sub-Saharan Africa (Senegal, Mauritania, perhaps Monrovia,
Liberia), Monterrey and Tampico in Mexico, Queensland, Cuba, Hawaii, and even
at lower latitudes very close to the equator, such as in Colombia.
Telegraph systems all over Europe andNorth America failed, in some cases giving
telegraph operators electric shocks. Telegraph pylons threw sparks. Some
telegraph operators could continue to send and receive messages despite having
disconnected their power supplies.
Studies have shown that a solar storm of this magnitude occurring today would likely cause more widespread problems for a modern and technology-dependent society. The solar storm of 2012 was of similar magnitude, but it passed Earth's orbit without striking the planet.
Carrington Flare
From August 28 to
September 2, 1859, numerous sunspots were observed on the Sun. On August 29,
southern aurorae were observed as far north as Queensland ,
Australia .
Just before noon on September 1, the English amateur astronomers Richard
Carrington and Richard Hodgson independently made the first observations of a solar
flare. The flare was associated with a major coronal mass ejection (CME) that
travelled directly toward Earth, taking 17.6 hours to make the 150 million
kilometre (93 million mile) journey. It is believed that the relatively high
speed of this CME (typical CMEs take several days to arrive at Earth) was made
possible by a prior CME, perhaps the cause of the large aurora event on August
29, that "cleared the way" of ambient solar wind plasma for the
Carrington event.
On September 1–2, 1859, one of the largest recorded geomagnetic storms (as recorded by ground-based magnetometers) occurred. Aurorae were seen around the world, those in the northern hemisphere as far south as the Caribbean; those over the Rocky Mountains in the
Telegraph systems all over Europe and
Less severe
storms have occurred in 1921 and 1960, when widespread radio disruption was
reported. The March 1989 geomagnetic storm knocked out power across large
sections of Quebec .
On July 23, 2012 a "Carrington-class" Solar Superstorm (Solar flare, Coronal
mass ejection, Solar EMP) was observed; its trajectory missed Earth in orbit.
Information about these observations was first shared publicly by NASA on April
28, 2014.
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