doldrums

　 　

WordNet

1. a belt of calms and light winds between the northern and southern trade winds of the Atlantic and Pacific

PrepTutorEJDIC

1. (赤道付近の)無風海域 / 憂うつ

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/10/28 10:59:21」(JST)

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For other uses, see Doldrums (disambiguation).

The doldrums is a colloquial expression derived from historical maritime usage, in which it refers to those parts of the Atlantic Ocean and the Pacific Ocean affected by the Intertropical Convergence Zone, a low-pressure area around the equator where the prevailing winds are calm. The low pressure is caused by the expanding atmosphere due to heating at the equator, which makes the air rise and travel north and south high in the atmosphere, until it subsides again in the horse latitudes. Some of that air returns to the doldrums through the trade winds. This process can lead to light or variable winds and more severe weather, in the form of squalls, thunderstorms and hurricanes. The doldrums are also noted for calm periods when the winds disappear altogether, trapping sail-powered boats for periods of days or weeks. The term appears to have arisen in the 18th century, when cross-Equator sailing voyages became more common.

Colloquially, the "doldrums" are a state of inactivity, mild depression, listlessness or stagnation.

The word is derived from dold (an archaic term meaning "stupid") and -rum(s), a noun suffix found in such words as "tantrum".

In literature

The doldrums are notably described in Samuel Taylor Coleridge's The Rime of the Ancient Mariner, in Laura Hillenbrand's Unbroken, and in Patrick O'Brian's Desolation Island. Additionally, the Doldrums are a fictional place in Norton Juster's novel The Phantom Tollbooth.

References

Notes

English Journal

• The "Spanish flu" pandemic of 1918-1919 in La Réunion (Indian Ocean).

• Gaüzère BA1, Aubry P2.
• Medecine et sante tropicales.Med Sante Trop.2015 Feb 1;25(1):13-20.
• Brought in by the ship Madonna, which was taking local survivors of World War I back to Reunion, the 1918 Spanish flu pandemic reached the island in March 1919 and lasted for three months. The controversies between doctors and between doctors and the colonial administrators, officials' desertion of
• PMID 25500279

• Pharmaceutical and biotech product patents in India: doldrums or blissfulness?

• Chowdhury P1, Khan SA1, Dutta P1, Mahanta J1.
• Nature biotechnology.Nat Biotechnol.2014 Feb;32(2):133-4. doi: 10.1038/nbt.2809.
• PMID 24509757

• Bringing rigour to translational medicine.

• Howells DW1, Sena ES2, Macleod MR2.
• Nature reviews. Neurology.Nat Rev Neurol.2014 Jan;10(1):37-43. doi: 10.1038/nrneurol.2013.232. Epub 2013 Nov 19.
• Translational neuroscience is in the doldrums. The stroke research community was among the first to recognize that the motivations inherent in our system of research can cause investigators to take shortcuts, and can introduce bias and reduce generalizability, all of which leads ultimately to the re
• PMID 24247324

Japanese Journal

• 特集 不動産市場低迷の背景と再生の見通し

• 証券アナリストジャーナル 47(12), 4-73, 2009-12
• NAID 40016905352

• 生産が停滞状態の夏市場を左右する (海外論壇 The Appraisal Journal Summer 2005)

• Delisle James R.
• 不動産研究 48(1), 62-65, 2006-01
• NAID 40015760221

• Can the Local Allocation Tax Break Free of the Doldrums?--Japan's Development of and Difficulties with Fiscal Equalization

• Ito Hirofumi
• Discussion paper series 2002(3), 1-32, 2002-09
• NAID 40005774923

Related Links

• Doldrums - Wikipedia, the free encyclopedia

The doldrums is a colloquial expression derived from historical maritime usage for those parts of the Atlantic Ocean and the Pacific Ocean affected by the Intertropical Convergence Zone, a low-pressure area around the equator where the ...

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