İÜ Deniz Bilimleri ve İşletmeciliği Enstitüsü resmi hesabıdır.
Istanbul, Turkey
Joined July 2018
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Öğr. Üyemiz İrşad Bayırhan vd. S. Yzr olduğu çalışmada; Türkiye’nin nadir subasar ormanlarından İğneada Longoz Ormanlarının insan baskısı ve iklim değişikliği nedeniyle tehdit altında olduğunu ortaya koyuyor.
iklimmasasi.com/igneada-long…
mdpi.com/1999-4907/16/6/976
Istanbul University, Institute of Marine Sciences retweeted
Türkiye’de yükseköğretim tarihi, İstanbul’un fethine kadar götürülebilir. Buna göre Osmanlı Devleti’nin kuruluşundan on sekizinci yüzyıla kadar başlıca yükseköğretim kurumu medreseler olmuştur. Osmanlıların her alanda yüzünü Batı’ya döndükleri on sekizinci yüzyılda modern askeri yükseköğretim kurumlarının ve on dokuzuncu yüzyılda ise yine Batı tarzı sivil yükseköğretim kurumu olarak Darülfünun’un açıldığı görülmektedir. Darülfünun, Cumhuriyet döneminin ilk on yılında da faaliyetini sürdürdükten sonra yerini İstanbul Üniversitesine bırakmıştır. Kısa tarihçede görüldüğü üzere Fatih ve Süleymaniye medreseleri, askeri yükseköğretim kurumları, Darülfünun ve nihayet İstanbul Üniversitesi, bu büyük bilim köprüsünün gelişim aşamalarını oluşturmaktadır.
#COP31 e sadece 2 gün kala, @csbgovtr Bakanımız Sayın @murat_kurum Murat Kurum’un katılımlarıyla düzenlenen Cop31 Motivasyon Günü’nde, Enstitümüzü temsilen doktora öğrencisi Sayın Selin Çelik genç gönüllü üniversiteliler arasında yer aldı
Istanbul University, Institute of Marine Sciences retweeted
一部の最新の貨物船や大型の船は船底から空気の泡を吹き出しながら走っています。
これは「空気潤滑システム」（ALS）と呼ばれる日本の造船・海運業界がリードして実用化させた画期的な省エネ技術です。
船底から泡を吹き出す目的と仕組みは以下の通りです。
1. なぜ泡を吹き出すの？
船が海を進むとき、船体と海水の間に発生する「摩擦抵抗」が大きなブレーキになります。特に平らな底が広い大型の貨物船（コンテナ船やタンカーなど）は、全体の抵抗の大部分がこの摩擦によるものです。
水よりも圧倒的に密度が低くサラサラしている「空気の泡」を船底に流すことで、水との摩擦を減らし、船が滑るように進めるようになります。
2. どんな効果があるの？
• 燃費の向上： 摩擦が減ることで、燃料の消費量を約5%〜10%も削減できます。
• 二酸化炭素（CO2）の削減： 巨大な貨物船は1日に何十トン〜何百トンもの燃料を消費するため、燃費が10%良くなるだけでも莫大な量のCO2排出を抑えることができ、地球温暖化対策として非常に注目されています。
3. どうやって泡を出しているの？
船の中に「ブロワ」と呼ばれる巨大な送風機を積み、船の底にある小さな穴（ノズル）から絶えず空気を送り込んでいます。
ただ空気を出すだけでなく、泡がすぐに逃げてしまわないように細かく均一な泡の膜（カーペット）を作ったり、最近では効率を高めるために泡をポンポンと周期的に間欠出力する技術なども開発されています。
ホバークラフトのように船体を完全に浮かせるわけではありませんが、「空気のクッションを敷いて走るエコな船」として、日本の三菱重工業やナカシマプロペラ、日本郵船などが世界に先駆けて開発し、実際の航路で活躍しています。
Istanbul University, Institute of Marine Sciences retweeted
Microplastics From The Great Pacific Garbage Patch Changing The Color Of The Ocean
Analysis of satellite data between 2002 and 2022 showed a cyan tint that appears best explained by an increased concentration of tiny plastic particles in the Northern Pacific.
nature.com/articles/s43247-0…
How the salvaged cargo of world’s oldest shipwreck helped reveal its secrets guinnessworldrecords.com/new… via @GWR
Istanbul University, Institute of Marine Sciences retweeted
🎉 Another Outstanding Scientific Achievement in Arctic Marine Research! 🌊❄️
I am delighted and proud to announce that the research article entitled “Abundance, Distribution and Diversity of Phycotoxins in the European and American Arctic,” co-authored by Assoc. Prof. Dr. Fuat Dursun @fuattdursun of ,@iu_debien has been published in Harmful Algae, a prestigious Q1-ranked international scientific journal.
Based on scientific expeditions conducted between 2016 and 2024, this important study investigates the abundance, geographical distribution, and diversity of phytoplankton-derived toxins across the European and American Arctic.
The findings reveal the widespread occurrence of phycotoxins, with coastal waters and fjord systems emerging as significant hotspots. The observed regional differences also highlight the growing importance of understanding climate change-related risks to Arctic marine ecosystems, food webs, and seafood safety.
🏆 We wholeheartedly congratulate Assoc. Prof. Dr. Fuat Dursun and his international research collaborators on this remarkable scientific accomplishment!
This publication represents another valuable contribution to international polar marine research and reflects the scientific excellence, global collaboration, and growing international visibility of @iu_debien
Congratulations to the entire research team, and best wishes for continued scientific success! 🌍🔬
#IstanbulUniversity #MarineSciences #ArcticResearch #PolarScience #HarmfulAlgae #Phycotoxins #ScientificExcellence #InternationalCollaboration
Enstitümüz öğretim ü. @fuattdursun yazarları arasında yer aldığı 2016–24 arasında Arktikteki fitoplankton kaynaklı toksinleri konu almakta olup "Abundance, distribution and diversity of phycotoxins in the European and American Arctic" adlı makale Harmful Algae - Q1 da yayınlandı
Enstitümüz öğretim ü. @fuattdursun yazarları arasında yer aldığı 2016–24 arasında Arktikteki fitoplankton kaynaklı toksinleri konu almakta olup "Abundance, distribution and diversity of phycotoxins in the European and American Arctic" adlı makale Harmful Algae - Q1 da yayınlandı
Istanbul University, Institute of Marine Sciences retweeted
Nobel ödüllü ilk Türk bilim insanı Prof. Dr. Aziz Sancar:
“Selçuk bana bir Baykar ceketi verdi. Arkasında KIZILELMA yazıyor. Ben işe yürüyerek giderim. Bizim ev laboratuvara yakın. Hep onu giyerim.
Görev yaptığım Kuzey Carolina Üniversitesinin bulunduğu Chapel Hill’de herkes KIZILELMA’nın ne olduğunu biliyor.”
R/V ALEMDAR II ye kazandırılan POLAR marine anten, geminin deniz haberleşmesi ve bağlantı altyapısını güçlendirmeye yönelik donanımları arasındaki yerini aldı.
Bilime ve deniz araştırmalarına sağladığı bu katkı için DenizBank’ın temsilcisi Ömer Bey'e teşekkür ederiz.
Istanbul University, Institute of Marine Sciences retweeted
R/V ALEMDAR II Bilimsel Araştırma Gemisinin yer aldığı Denizbank Reklamı...
Istanbul University, Institute of Marine Sciences retweeted
1. “trans-Arctic transport corridor”
2. “multilateral ocean governance”
sc.mp/moftk
Istanbul University, Institute of Marine Sciences retweeted
Antarctica’s Winter Sea Ice Sends a Global Warning
science.nasa.gov/earth/earth…
NASA reports that Antarctic sea ice reached just 17.59 million km² at its winter peak in September 2026—the third-lowest maximum in the satellite record. The ice then retreated rapidly as Antarctic spring began.
Why does this matter? Sea ice helps regulate ocean–atmosphere heat exchange and supports marine ecosystems, from tiny krill to penguins and seals. Antarctica may be far from where we live, but changes at the poles matter to the entire planet. Understanding these changes requires continuous observations and international scientific cooperation.
#Antarctica #SeaIce #ClimateScience
Istanbul University, Institute of Marine Sciences retweeted
As part of the Interreg-supported BS-SEOS project, we conducted a 3-day mobile station training session by @CodevintecIt & L. Minno —featuring both theory and fieldwork—along with an operation to collect excellent oceanographic data and recover a lost buoy
@Denizhandv
As part of the Interreg-supported BS-SEOS project, we conducted a three-day mobile station training session by Codevintec and Lorenzo Minno —featuring both theory and fieldwork—along with an operation to collect excellent oceanographic data and recover a lost buoy. @iudebien
As part of the Interreg-supported BS-SEOS project, we conducted a 3-day mobile station training session by @CodevintecIt & L. Minno —featuring both theory and fieldwork—along with an operation to collect excellent oceanographic data and recover a lost buoy
@Denizhandv
As part of the Interreg-supported BS-SEOS project, we conducted a three-day mobile station training session by Codevintec and Lorenzo Minno —featuring both theory and fieldwork—along with an operation to collect excellent oceanographic data and recover a lost buoy. @iudebien
Istanbul University, Institute of Marine Sciences retweeted
Beaufort Sea, which is the largest Arctic Ocean freshwater reservoir, has increased its freshwater content by 40% over past two decades
A release of this freshwater into ocean could fundamentally weaken critical ocean current AMOC AND totally change European climate
cpo.noaa.gov/freshwater-outf…
Istanbul University, Institute of Marine Sciences retweeted
What, exactly, is #ElNiño? How will it impact you—and people around the world?
Find out from WHOI’s Alex Kinsella, @wsu’s Deepti Singh, and @CalPolyCSM’s Ben Ruttenberg TONIGHT at #OceanEncounters!
📲Sign up for TONIGHT's live Zoom event: hubs.li/Q04yKlSy0
Istanbul University, Institute of Marine Sciences retweeted
🐙 It’s #WorldOctopusDay! Eight arms, three hearts, and plenty more to discover beneath the surface 🌊
Take a closer look → ow.ly/PFYz50ZVTmq
