{"id":77,"date":"2023-04-30T20:32:51","date_gmt":"2023-04-30T19:32:51","guid":{"rendered":"https:\/\/www.oceanblogs.org\/so298\/?p=77"},"modified":"2023-04-30T20:35:07","modified_gmt":"2023-04-30T19:35:07","slug":"the-stuff-dreams-are-made-of","status":"publish","type":"post","link":"https:\/\/www.oceanblogs.org\/so298\/2023\/04\/30\/the-stuff-dreams-are-made-of\/","title":{"rendered":"The stuff dreams are made of …"},"content":{"rendered":"\n

Scientists have big dreams when it comes to their work. And to make those dreams come true, they need salt water, lots of salt water! But where do you get so much salt water on an ocean? The scientists are not satisfied with just any salt water, it has to come from a certain position and from a certain depth (if possible to the meter).<\/p>\n\n\n\n

This is where the most important instrument of our voyage comes into play, THE CTD!!!<\/p>\n\n\n\n

\"\"
The CTD returns with closed bottles. (by Mario M\u00fcller)<\/figcaption><\/figure>\n\n\n\n

What is the CTD exactly? Well, it must have something to do with saltwater.<\/p>\n\n\n\n

The CTD consists of a frame in which a central unit is installed, to which various sensors are connected and can be lowered deep into the water via a thick cable. CTD stands for the terms conductivity, temperature, pressure and is derived from the main sensors of this device. Furthermore, sensors for oxygen content, turbidity, fluorescence, nutrients and light intensity are installed. Around these sensors are 22 cylindrical 10 liter bottles with flaps on the top and bottom, which can be closed by the control unit of the CTD at any depth.<\/p>\n\n\n\n

On the monitor of this control unit we can follow and record in real time the change of each measured parameter on its way to the depth of the ocean.<\/p>\n\n\n\n

At depths previously determined by the scientists on the basis of the measured profile, these bottles are then closed in order to be able to take samples on deck afterwards and use them for all kinds of analyses and experiments.<\/p>\n\n\n\n

Furthermore, there is an acoustic current meter in our CTD, which shows us the currents in the entire water column.<\/p>\n\n\n\n

We have also installed two cameras that provide us with images of the plankton present at the respective depths.<\/p>\n\n\n\n

by Mario M\u00fcller<\/p>\n\n\n\n

\"\"
The team running the stainless steel CTD. (by Lea Blum)<\/figcaption><\/figure>\n\n\n\n

Der Stoff aus dem die Tr\u00e4ume sind \u2026<\/h2>\n\n\n\n

Wissenschaftler haben gro\u00dfe Tr\u00e4ume, wenn es um ihre Arbeit geht. Und um diese Tr\u00e4ume zu verwirklichen, brauchen sie Salzwasser, viel Salzwasser! Aber woher bekommt man so viel Salzwasser auf einem Ozean? Die Wissenschaftler geben sich ja nicht mit irgendwelchem Salzwasser zufrieden, es muss ja schon von einer bestimmten Position und aus einer ganz bestimmten Tiefe (m\u00f6glichst auf den Meter genau) stammen.<\/p>\n\n\n\n

Genau hier kommt das wichtigste Instrument unserer Reise ins Spiel, DIE CTD!!!<\/p>\n\n\n\n

Was ist die CTD genau? Es muss ja etwas mit Salzwasser zu tun haben.<\/p>\n\n\n\n

Die CTD besteht aus einem Rahmen, in dem eine Zentraleinheit verbaut ist, an der diverse Sensoren angeschlossen sind und \u00fcber ein dickes Kabel tief ins Wasser gelassen werden k\u00f6nnen. CTD steht dabei f\u00fcr die Begriffe Leitf\u00e4higkeit, Temperatur, Druck und leitet sich von den Hauptsensoren dieses Ger\u00e4tes ab. Weiterhin sind noch Sensoren f\u00fcr den Sauerstoffgehalt, Tr\u00fcbung, Fluoreszenz, N\u00e4hrstoffe und Lichtintensit\u00e4t verbaut. Um diese Sensoren herum sind 22 zylinderf\u00f6rmige 10 Liter Flaschen mit Klappen an der Ober- und Unterseite angeordnet, die von der Kontrolleinheit der CTD in jeder beliebigen Tiefe geschlossen werden k\u00f6nnen.<\/p>\n\n\n\n

Am Monitor dieser Kontrolleinheit k\u00f6nnen wir in Echtzeit die \u00c4nderung der einzelnen gemessenen Parameter auf dem Weg in die Tiefe des Ozeans mitverfolgen und aufzeichnen.<\/p>\n\n\n\n

An von den Wissenschaftlern vorher anhand des gemessenen Profils festgelegten Tiefen, werden diese Flaschen dann geschlossen, um nachher an Deck Proben nehmen zu k\u00f6nnen und diese f\u00fcr alle m\u00f6glichen Analysen und Experimente zu verwenden.<\/p>\n\n\n\n

Des Weiteren befindet sich in unserer CTD ein akustischer Str\u00f6mungsmesser, der uns die Str\u00f6mungen in der gesamten Wassers\u00e4ule anzeigt.<\/p>\n\n\n\n

Ebenso haben wir noch zwei Kameras verbaut, die uns mit Bildern des in der jeweiligen Tiefe vorkommenden Planktons versorgen.<\/p>\n\n\n\n

von Mario M\u00fcller<\/p>\n","protected":false},"excerpt":{"rendered":"

Scientists have big dreams when it comes to their work. And to make those dreams come true, they need salt water, lots of salt water! But where do you get so much salt water on an ocean? The scientists are not satisfied with just any salt water, it has to come from a certain position […]<\/p>\n","protected":false},"author":247,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-77","post","type-post","status-publish","format-standard","hentry","category-at-sea"],"_links":{"self":[{"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/posts\/77","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/users\/247"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/comments?post=77"}],"version-history":[{"count":3,"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/posts\/77\/revisions"}],"predecessor-version":[{"id":83,"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/posts\/77\/revisions\/83"}],"wp:attachment":[{"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/media?parent=77"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/categories?post=77"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oceanblogs.org\/so298\/wp-json\/wp\/v2\/tags?post=77"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}