Magnetic storm and term-day observations at the Prague observatory Clementinum in the mid-19th century

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F23%3A00552926" target="_blank" >RIV/67985530:_____/23:00552926 - isvavai.cz</a>

Result on the web

<a href="https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/gdj3.141" target="_blank" >https://rmets.onlinelibrary.wiley.com/doi/full/10.1002/gdj3.141</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/gdj3.141" target="_blank" >10.1002/gdj3.141</a>

Result language

angličtina

Original language name

Magnetic storm and term-day observations at the Prague observatory Clementinum in the mid-19th century

Original language description

Magnetic observations at the Clementinum Observatory were started in July 1839 and data up to 1917 were published in yearbooks. In addition to regular daily observations with a typical 2-hr time step, two categories of data with a higher cadence were provided in the first decade. The first category captures 73 magnetic storms with their magnitude being of at least a moderate level. The second category is the dense observations during the days that had been agreed for joint measurements by the observatories organized in the Göttingen Magnetic Union (GMU), these measurements being known as term-day observations. Whereas four terms per year were set by GMU, many observatories agreed to carry out additional observations in the eight remaining months. The term-day observations also continued being performed for several years after the end of the GMU activities in 1841. Data of 120 term days from January 1840 to December 1849 were published. The declination was observed using the magnetic compass principle, while a bifilar apparatus was used to measure the horizontal intensity. When converting the data to the physical units of the SI, we have achieved the consistency of these high cadence data with previously published regular hourly observations of the geomagnetic field. This requirement was also met by considering the temperature dependence of measurements by the bifilar apparatus in determining the absolute values of horizontal intensity. Revealing the historical observations of the geomagnetic field can serve as a valuable material for studying the space weather in the past and may also contribute to the refinement of global field modelling.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10508 - Physical geography

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Geoscience Data Journal

ISSN

2049-6060

e-ISSN

2049-6060

Volume of the periodical

10

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

6

Pages from-to

39-44

UT code for WoS article

000734546500001

EID of the result in the Scopus database

2-s2.0-85121701666