Morild

Morild (dinoflagellater) ved bølgebrydning.

Morild (Noctiluca scintillans) i en havn.

Alternativ betydning - Bebyggelsen Morild i Hjørring Kommune

Morild er et naturfænomen, hvor havet synes at lyse eller glimte. Naturfænomenet baserer sig på at havlevende organismer udviser bioluminiscens. Der er mange mikrober og nogle havdyr, som kan forårsage morild.^[1] I danske farvande, er det som regel fure-alger i slægten Noctiluca; typisk arten Noctiluca scintillans.^[2]

Morild kan opstå spontant eller induceres af bevægelse, f.eks. fra skvulp, fisk eller mennesker.^[3] Nogle morildhændelser er så store og kraftige, at de kan ses fra satellitter. ^[4]^[5]

Etymologi

Ordet er af blandet oprindelse og er bl.a. dannet af ordene "mor" og det oldnordiske marr, der betyder henholdsvis "hensmuldrende masse" og "hav". Oldnordisk mǫrueldr, norsk morild, islandsk maurildi, svensk mareld og engelsk (især shetlandsdialekt) mareel.^[6]

Kilder og referencer

^ University of California – San Diego (2009, April 5). Decoding Mysterious Green Glow Of The Sea. ScienceDaily. Retrieved April 28, 2009 Citat: "...Marine fireworms use bioluminescence to attract suitors in an undersea mating ritual...The precisely timed bioluminescent displays have been tracked like clockwork in Southern California, the Caribbean and Japan, peaking one to two days before each quarter moon phase, 30 to 40 minutes after sunset and lasting approximately 20 to 30 minutes..."
^ Alger i Danske Havområder (Dinoflagellater) Arkiveret 2. oktober 2013 hos Wayback Machine DMU
^ 11/21/2005, Usa today: A glowing sea, courtesy of algae Citat: "...The water glowed green in the direction of the movement...A: Little microscopic creatures (called Lingulodinium polyedrum) that glow in the dark caused the alluring strange display that night..."
^ 05 October 2005, New Scientist: Sea's eerie glow seen from space (Webside ikke længere tilgængelig) Citat: "...The ancient mariners were right. Tales of "milky seas" that glow bluish-white at night and extend as far as the horizon have been spun by sailors for centuries. Now this eerie glow has been spotted from space....The glowing area spanned 15,400 square kilometres, an area the size of Connecticut (Image: Steven D Miller, US Naval Research Laboratory)..."
^ NASA, DAAC Study: The Incredible Glowing Algae Citat: "...Each year, the North Atlantic Ocean announces springtime by producing “blooms” large enough to be seen from space. These explosive increases in microscopic marine algae, called phytoplankton, appear as sudden bright blossoms in satellite imagery..."
^ [1] Ordbog over det Danske Sprog

Spire

Denne naturvidenskabsartikel er en spire som bør udbygges. Du er velkommen til at hjælpe Wikipedia ved at udvide den.

[1] University of California – San Diego (2009, April 5). Decoding Mysterious Green Glow Of The Sea. ScienceDaily. Retrieved April 28, 2009 Citat: "...Marine fireworms use bioluminescence to attract suitors in an undersea mating ritual...The precisely timed bioluminescent displays have been tracked like clockwork in Southern California, the Caribbean and Japan, peaking one to two days before each quarter moon phase, 30 to 40 minutes after sunset and lasting approximately 20 to 30 minutes..."

[2] Alger i Danske Havområder (Dinoflagellater) Arkiveret 2. oktober 2013 hos Wayback Machine DMU

[3] 11/21/2005, Usa today: A glowing sea, courtesy of algae Citat: "...The water glowed green in the direction of the movement...A: Little microscopic creatures (called Lingulodinium polyedrum) that glow in the dark caused the alluring strange display that night..."

[4] 05 October 2005, New Scientist: Sea's eerie glow seen from space (Webside ikke længere tilgængelig) Citat: "...The ancient mariners were right. Tales of "milky seas" that glow bluish-white at night and extend as far as the horizon have been spun by sailors for centuries. Now this eerie glow has been spotted from space....The glowing area spanned 15,400 square kilometres, an area the size of Connecticut (Image: Steven D Miller, US Naval Research Laboratory)..."

[5] NASA, DAAC Study: The Incredible Glowing Algae Citat: "...Each year, the North Atlantic Ocean announces springtime by producing “blooms” large enough to be seen from space. These explosive increases in microscopic marine algae, called phytoplankton, appear as sudden bright blossoms in satellite imagery..."

[6] [1] Ordbog over det Danske Sprog

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Morild

Etymologi

Kilder og referencer

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