File:Turquoise Swirls in the Black Sea.jpg
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DescriptionTurquoise Swirls in the Black Sea.jpg |
Afrikaans: Meeste somers verskyn hierdie juweelkleurige skakerings in die Swart See. Die turkoois warrels is nie die kwashale van 'n skildery nie; hulle dui op die teenwoordigheid van fitoplankton, wat in sigbare waterstrome en -werwels manifesteer. Op 29 Mei 2017 het die Matige Resolusie Afbeelding-spektroradiometer (MODIS) op NASA se Aqua-satelliet hierdie beelddata van 'n voortdurende fitoplanktonbloei in die Swart See vasgevang. Die beeld is 'n mosaïek, saamgestel uit herhaalde satelliet-oorgange. Fitoplankton is drywende, mikroskopiese organismes wat hul eie kos uit sonlig en opgeloste voedingstowwe maak, en hier vloei genoegsame voedingstowwe uit o.m. die Donau- en Dnieperrivier in die Swart See. Oor die algemeen onderhou fitoplankton vis, skulpvis en ander mariene organismes. Groot, gereelde opbloei kan egter lei tot eutrofikasie – die verlies van suurstof uit die water – en kan eindelik die seelewe versmoor. Een soort fitoplankton wat algemeen in die Swart See voorkom, is kokolitofore—mikroskopiese plankton wat met wit kalsiumkarbonaat oortrek is. Wanneer dit in grootmaat aangroei, is hierdie reflektiewe plate opvallend uit die ruimte sigbaar as helder, melkerige water. "Die toename in reflektiwiteit in Mei in die Swart See, met 'n hoogtepunt in Junie, is in ooreenstemming met resultate van ander jare," het Norman Kuring, 'n oseaanwetenskaplike by NASA se Goddard-ruimtevlugsentrum, gesê. Hoewel Kuring nie dié streek bestudeer nie, is die opbloei vanjaar (d.i. somer 2017) een van die helderste wat hy sedert 2012 opgemerk het.
Ander soorte fitoplankton kan baie anders lyk in satellietbeelde. "Dit is belangrik om te onthou dat nie alle fitoplanktonopbloeie die water helderder maak nie," het Kuring gesê. "Diatome, wat ook in die Swart See opbloei, is geneig om water donkerder eerder as helderder te maak." العربية: تُظهر صورة القمر الصناعي MODIS-Aqua سطح الأرض بما في ذلك السحب والغابات والجزر والصحاري والبحر الأبيض المتوسط الأزرق العميق ودوامات العوالق النباتية في البحر الأسود وبحر قزوين والخليج العربي (مايو 2017).
Čeština: V letním období se na Černém moři objevují barevné oblasti připomínající tahy malířským stětcem. Ve skutečnosti představují tyrkysově zbarvené plochy oblasti s vysokým výskytem fytoplanktonu, které kopírují vodní prody a víry.
English: Most summers, jewel-toned hues appear in the Black Sea. The turquoise swirls are not the brushstrokes of a painting; they indicate the presence of phytoplankton, which trace the flow of water currents and eddies.
On May 29, 2017, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured the data for this image of an ongoing phytoplankton bloom in the Black Sea. The image is a mosaic, composed from multiple satellite passes over the region. Phytoplankton are floating, microscopic organisms that make their own food from sunlight and dissolved nutrients. Here, ample water flow from rivers like the Danube and Dnieper carries nutrients to the Black Sea. In general, phytoplankton support fish, shellfish, and other marine organisms. But large, frequent blooms can lead to eutrophication—the loss of oxygen from the water—and end up suffocating marine life. One type of phytoplankton commonly found in the Black Sea are coccolithophores—microscopic plankton that are plated with white calcium carbonate. When aggregated in large numbers, these reflective plates are easily visible from space as bright, milky water. “The May ramp-up in reflectivity in the Black Sea, with peak brightness in June, seems consistent with results from other years,” said Norman Kuring, an ocean scientist at NASA’s Goddard Space Flight Center. Although Kuring does not study this region, the bloom this year is one of the brightest to catch his eye since 2012. Other types of phytoplankton can look much different in satellite imagery. “It’s important to remember that not all phytoplankton blooms make the water brighter,” Kuring said. “Diatoms, which also bloom in the Black Sea, tend to darken water more than they brighten it.”Español: Vista satelital del mar Mediteraneo (abajo), el mar Negro (centro) y el mar Caspio (arriba). En el mar Negro a menudo aparacen tonos turquesas durante el verano. Estos indican la presencia de fitoplancton, que rastrea el flujo de las corrientes de agua.
Magyar: Műholdfelvétel a hu:Fekete-tengerwFekete-tengerről és környékéről. A tengerben látható türkiz kanyarulatok fitoplanktonok jelenlétére utalnak
Nederlands: 's Zomers kleurt het water van de Zwarte Zee vaak turquoise door de aanwezigheid van fytoplankton
Polski: Fotografia satelitarna Morza Czarnego (w środku), Morza Śródziemnego (u dołu) oraz Morza Kaspijskiego (u góry, z prawej strony). W okresie letnim na Morzu Czarnym zazwyczaj pojawiają się turkusowe kłęby. Jest to fitoplankton unoszony przez morskie prądy i wiry.
Português: Vista por satélite do mar Mediterrâneo (abaixo), do mar Negro (centro) e do mar Cáspio (acima). No mar Negro, tons de turquesa aparecem frequentemente durante o verão. Estes indicam a presença de fitoplâncton, que rastreia o fluxo das correntes de água.
Русский: Спутниковая фотография Чёрного моря. Видны также Каспийское, Средиземное и Азовское моря. Бирюзовые фигуры на фото указывают на наличие фитопланктона в Чёрном море.
Українська: Компіляція супутникових знімків циркуляції поверхневих вод у Чорному морі. Бірюзовий колір вказує на активний розвиток фітопланктону.
اردو: بحیرہ اسود میں اکثر موسم گرما میں جواہرات نما رنگ آ جاتے ہیں۔ فیروزی رنگ کے بھنور کسی برش کی پینٹنگ نہیں ہے؛ یہ نبات تیراکہ کی موجودگی کو ظاہر کرتے ہیں، جو پانی کی دھاراؤں اور گردابوں کے بہاؤ کا پتہ لگاتے ہیں۔ |
Date | |
Source | [1] |
Author | Norman Kuring / NASA |
Assessment[edit]
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This image was selected as picture of the day on Wikimedia Commons for 3 July 2018. It was captioned as follows: English: Most summers, jewel-toned hues appear in the Black Sea. The turquoise swirls are not the brushstrokes of a painting; they indicate the presence of phytoplankton, which trace the flow of water currents and eddies. Other languages:
Čeština: V letním období se na Černém moři objevují barevné oblasti připomínající tahy malířským stětcem. Ve skutečnosti představují tyrkysově zbarvené plochy oblasti s vysokým výskytem fytoplanktonu, které kopírují vodní prody a víry. English: Most summers, jewel-toned hues appear in the Black Sea. The turquoise swirls are not the brushstrokes of a painting; they indicate the presence of phytoplankton, which trace the flow of water currents and eddies. Español: Vista satelital del mar Mediterráneo (abajo), el mar Negro (centro) y el mar Caspio (arriba). En el mar Negro a menudo aparacen tonos turquesas durante el verano. Estos indican la presencia de fitoplancton, que rastrea el flujo de las corrientes de agua. Magyar: Műholdfelvétel a hu:Fekete-tengerwFekete-tengerről és környékéről. A tengerben látható türkiz kanyarulatok fitoplanktonok jelenlétére utalnak Nederlands: 's Zomers kleurt het water van de Zwarte Zee vaak turquoise door de aanwezigheid van fytoplankton Polski: Fotografia satelitarna Morza Czarnego (w środku), Morza Śródziemnego (u dołu) oraz Morza Kaspijskiego (u góry, z prawej strony). W okresie letnim na Morzu Czarnym zazwyczaj pojawiają się turkusowe kłęby. Jest to fitoplankton unoszony przez morskie prądy i wiry. Português: Vista por satélite do mar Mediterrâneo (abaixo), do mar Negro (centro) e do mar Cáspio (acima). No mar Negro, tons de turquesa aparecem frequentemente durante o verão. Estes indicam a presença de fitoplâncton, que rastreia o fluxo das correntes de água. Русский: Спутниковая фотография Чёрного моря. Видны также Каспийское, Средиземное и Азовское моря. Бирюзовые фигуры на фото указывают на наличие фитопланктона в Чёрном море. اردو : بحیرہ اسود میں اکثر موسم گرما میں جواہرات نما رنگ آ جاتے ہیں۔ فیروزی رنگ کے بھنور کسی برش کی پینٹنگ نہیں ہے؛ یہ نبات تیراکہ کی موجودگی کو ظاہر کرتے ہیں، جو پانی کی دھاراؤں اور گردابوں کے بہاؤ کا پتہ لگاتے ہیں۔ |
Deutsch: Dieses Bild wurde als Bild der Woche auf der tschechischen Wikipedia für die 37 Woche ausgewählt, 2018. English: This image was selected as a picture of the week on the Czech Wikipedia for 37th week, 2018. Français : Cette image est sélectionnée en tant qu’image de la semaine sur la Wikipédia Tchèque pour la 37e semaine de 2018. Italiano: Questa immagine è stata selezionata come Immagine della settimana su Wikipedia in ceco per la XXXVII settimana del 2018. Македонски: Сликава е избрана за слика на неделата на чешката Википедија за XXXVII недела од 2018 година. Русский: Эта иллюстрация была выбрана изображением недели в чешском разделе «Википедии» для недели номер 37 2018 года. Українська: Ця ілюстрація була вибрана зображенням тижня в чеському розділі «Вікіпедії» для тижня номер 37, 2018 року. |
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) | ||
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JPEG file comment | Satellite: Aqua
Sensor: MODIS Date: 29 May 2017 Description: Coccolithophore blooms brighten the Black Sea. Red channel: Band 1 (645 nm) Green channel: Band 4 (555 nm) Blue channel: Band 3 (469 nm) Projection: near-sided perspective Projection details: mapproject -Rd -JG17/46/1.4/100/32/-90/25/25/70 Image created by: Norman Kuring |
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