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{{Infobox Solar cycles
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|cycle_num=7
{{Article for deletion/dated|page=Solar cycle 1|timestamp=20140729164420|year=2014|month=July|day=29|substed=yes}}
|start_date=May 1823
<!-- For administrator use only: {{Old AfD multi|page=Solar cycle 1|date=29 July 2014|result='''keep'''}} -->
|end_date=November 1833
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|duration=10.5
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'''Solar cycle 7''' was the seventh [[solar cycle]] since 1755, when extensive recording of solar [[sunspot]] activity began.<ref name="Kane">Kane, R.P. (2002). "[http://www.springerlink.com/content/qtq52nl8vtq7w2t6/ Some Implications Using the Group Sunspot Number Reconstruction]". ''Solar Physics'' '''205(2)''', 383-401.</ref><ref name=SpaceToday>{{cite web | title=The Sun: Did You Say the Sun Has Spots? | url=http://www.spacetoday.org/SolSys/Sun/Sunspots.html | publisher=Space Today Online | accessdate=12 August 2010}}</ref> The solar cycle lasted 10.5 years, beginning in May 1823 and ending in November 1833 (thus overlapping the [[Dalton Minimum]]). The maximum smoothed sunspot number (monthly number of sunspots averaged over a twelve-month period) observed during the solar cycle was 71.5, and the minimum was 7.3.<ref name="SIDC Monthly Smoothed Sunspot Number">SIDC Monthly Smoothed Sunspot Number. "[http://sidc.oma.be/sunspot-data/]"</ref>
|max_count=119.2
|max_count_date=November 1829
|min_count=0.2
|prev_name=[[Solar cycle 6]]
|prev_dates=1810–1823
|next_name=[[Solar cycle 8]]
|next_dates=1833–1843
}}

[[File:Samuel Heinrich Schwabe.jpg|thumb|upright|[[Heinrich Schwabe]], who discovered the sunspot cycle, began his personal observations in 1826, during solar cycle 7.<ref>[http://www.phy6.org/Education/whschwab.html Excerpts from ''Solar Observations During 1843'' by Heinrich Schwabe, (Astronomische Nachrichten, vol. 20., no. 495, 1843)]</ref>]]
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'''Solar cycle 7''' was the seventh [[solar cycle]] since 1755, when extensive recording of solar [[sunspot]] activity began.<ref name="Kane">{{citation|doi=10.1023/A:1014296529097|year=2002|last1=Kane|first1=R.P.|title=Some Implications Using the Group Sunspot Number Reconstruction|journal=Solar Physics|volume=205|issue=2|pages=383–401|bibcode=2002SoPh..205..383K}}</ref><ref name=SpaceToday>{{cite web | title=The Sun: Did You Say the Sun Has Spots? | url=http://www.spacetoday.org/SolSys/Sun/Sunspots.html | publisher=Space Today Online | accessdate=12 August 2010}}</ref> The solar cycle lasted 10.5 years, beginning in May 1823 and ending in November 1833 (thus overlapping the [[Dalton Minimum]]). The maximum [[smoothed sunspot number]] observed during the solar cycle was 119.2 (November 1829), and the starting minimum was 0.2.<ref name="SIDC Monthly Smoothed Sunspot Number">SIDC Monthly Smoothed Sunspot Number. "[http://sidc.oma.be/sunspot-data/]"</ref>


==See also==
==See also==
*[[Solar variation]]
*[[List of solar cycles]]
*[[List of solar cycles]]


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{{Solar cycles}}
{{Solar cycles}}


{{Use dmy dates|date=October 2010}}
{{Use dmy dates|date=September 2019}}


{{DEFAULTSORT:Solar Cycle 07}}
{{DEFAULTSORT:Solar Cycle 07}}

Latest revision as of 18:17, 16 August 2022

Solar cycle 7
Sunspot data
Start dateMay 1823
End dateNovember 1833
Duration (years)10.5
Max count119.2
Max count monthNovember 1829
Min count0.2
Cycle chronology
Previous cycleSolar cycle 6 (1810–1823)
Next cycleSolar cycle 8 (1833–1843)
Heinrich Schwabe, who discovered the sunspot cycle, began his personal observations in 1826, during solar cycle 7.[1]

Solar cycle 7 was the seventh solar cycle since 1755, when extensive recording of solar sunspot activity began.[2][3] The solar cycle lasted 10.5 years, beginning in May 1823 and ending in November 1833 (thus overlapping the Dalton Minimum). The maximum smoothed sunspot number observed during the solar cycle was 119.2 (November 1829), and the starting minimum was 0.2.[4]

See also

[edit]

References

[edit]
  1. ^ Excerpts from Solar Observations During 1843 by Heinrich Schwabe, (Astronomische Nachrichten, vol. 20., no. 495, 1843)
  2. ^ Kane, R.P. (2002), "Some Implications Using the Group Sunspot Number Reconstruction", Solar Physics, 205 (2): 383–401, Bibcode:2002SoPh..205..383K, doi:10.1023/A:1014296529097
  3. ^ "The Sun: Did You Say the Sun Has Spots?". Space Today Online. Retrieved 12 August 2010.
  4. ^ SIDC Monthly Smoothed Sunspot Number. "[1]"



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