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microbialites underwater


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#1 lutfu

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Posted 03 July 2018 - 09:39 PM

Hello

 filmed those microbialites  in Turkey with gh5 and a 8mm lens

Hope you enjoy

 


Edited by lutfu, 03 July 2018 - 10:01 PM.


#2 Tom_Kline

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Posted 03 July 2018 - 10:06 PM

Very interesting! Is the blurry water due to temperature or dissolved substances (salinity) or both? Since it appears to be going up it could be because this water is less dense which could be due to temperature  (warmer) or less dissolved stuff (fresher). However if it is warm enough the water could have a higher salinity and be buoyant.


Edited by Tom_Kline, 03 July 2018 - 10:23 PM.

Thomas C. Kline, Jr., Ph. D.
Oceanography & Limnology
Currently used housed digital cameras: Canon EOS-1Ds MkIII, EOS-1D MkIV, and EOS-1DX; and Nikon D3X. More or less retired: Canon EOS-1Ds MkII; and Nikon D1X, D2X, and D2H.

Lens focal lengths ranging from 8 to 200mm for UW use. Seacam housings and remote control gear. Seacam 60D, 150D, and 250D, Sea&Sea YS250, and Inon Z220 strobes.

http://www.salmonography.com/

 


#3 lutfu

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Posted 03 July 2018 - 11:50 PM

Very interesting! Is the blurry water due to temperature or dissolved substances (salinity) or both? Since it appears to be going up it could be because this water is less dense which could be due to temperature  (warmer) or less dissolved stuff (fresher). However if it is warm enough the water could have a higher salinity and be buoyant.

Hello

İt should be  less dissolved stuff because the water coming out was colder actually...



#4 Tom_Kline

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Posted 04 July 2018 - 12:27 AM

Interesting. The relationship between salinity, temperature and water density is complicated as shown in this figure. The curved lines are lines of equal density, a.k.a. isopycnals. And this is for seawater with fixed ratios of dissolved substances.

 

https://glossary.per...?en=T-S diagram


Thomas C. Kline, Jr., Ph. D.
Oceanography & Limnology
Currently used housed digital cameras: Canon EOS-1Ds MkIII, EOS-1D MkIV, and EOS-1DX; and Nikon D3X. More or less retired: Canon EOS-1Ds MkII; and Nikon D1X, D2X, and D2H.

Lens focal lengths ranging from 8 to 200mm for UW use. Seacam housings and remote control gear. Seacam 60D, 150D, and 250D, Sea&Sea YS250, and Inon Z220 strobes.

http://www.salmonography.com/

 


#5 lutfu

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Posted 04 July 2018 - 09:26 PM

Interesting. The relationship between salinity, temperature and water density is complicated as shown in this figure. The curved lines are lines of equal density, a.k.a. isopycnals. And this is for seawater with fixed ratios of dissolved substances.

 

https://glossary.per...?en=T-S diagram

 


Hello

some coulumns  were like 15  20 meters high and especially the bottom of those were so cold compare to the surface of the water...

I don't know if it explains but a more scientific definition of water I paste below

Lake Van is a terminal soda lake located in a semiarid region (eastern Anatolia, Turkey). Its geographical setting makes Lake Van a superb archive of paleoenvironmental changes. One of the aims of the ICDP PALEOVAN project is the reconstruction of the hydrological and climatic variability in the eastern Mediterranean region and the Near East on glacial/interglacial and millennial time scales. We applied a multi-proxy approach to distinguish the environmental synsedimentary imprint and the postsedimentary diagenetic changes. Microfaunal evidence, carbonate isotopic composition (d18O, d13C), molecular proxies (BIT, ACE) and isotopic composition of lipid biomarkers (dD) are matched with isotopic and elemental composition (d18O, dD, Mg, Ca, Sr, Cl, salinity) of sediment pore-water. An excellent correspondence between these proxies indicates that the elemental composition of pore water in Lake Van does not result from diagenetic changes, but, unlike in many cases known from marine environment, represents to some extent relicts of 'paleolake-water'. On the contrary, the stable isotopic composition of the pore water (d18O, dD) seems to reflect more recent hydrological regime dominated by precipitation/evaporation changes. As salinity and chlorine concentration changes mimic the isotopic composition of biomarkers for the last 140 ka, we use pore-water data to quantify changes in the lake level. Our reconstruction (Tomonaga et al., in review) is in line with previous studies on lake terraces (Kuzucuoglu et al., 2010) and seismic surveys (Cukur et al., 2012) showing a major transgression of up to 105 m with respect to the current lake level during the last interglacial (MIS5e), and a major regression of ~145 m at ~30 ka BP during the last glacial. Kuzucuoglu et al. (2010) Formation of the Upper Pleistocene terraces of Lake Van (Turkey). Journal of Quaternary Science 25, 1124-1137. Cukur et al. (2012) Sedimentary evolution of Lake Van (Eastern Turkey) reconstructed from high-resolution seismic investigations. International Journal of Earth Sciences 102, 571-585 Tomonaga et al. (in review) Porewater salinity reveals past lake-level changes in the Earth's largest soda lake.

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#6 Tom_Kline

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Posted 04 July 2018 - 10:57 PM

Interesting. I found more facts about Lake Van here:

https://en.wikipedia.org/wiki/Lake_Van

And the salinity here:

https://www.google.c...ent=firefox-b-1

The table says 23 parts per thousand so not as salty as the main oceans: 32-35 parts per thousand


Thomas C. Kline, Jr., Ph. D.
Oceanography & Limnology
Currently used housed digital cameras: Canon EOS-1Ds MkIII, EOS-1D MkIV, and EOS-1DX; and Nikon D3X. More or less retired: Canon EOS-1Ds MkII; and Nikon D1X, D2X, and D2H.

Lens focal lengths ranging from 8 to 200mm for UW use. Seacam housings and remote control gear. Seacam 60D, 150D, and 250D, Sea&Sea YS250, and Inon Z220 strobes.

http://www.salmonography.com/

 


#7 benedika

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Posted 05 July 2018 - 05:06 AM

Very interesting! Thanks for sharing!

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#8 adamtaylor

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Posted 06 July 2018 - 04:40 PM

Really cool,

Did not realize there were Microbiolites in Turkey.

I know of the ones in British Columbia, Canada about 4 -5 hours drive from me, and others in Chile. There was here a research group from NASA / SETI were studying them as a form of early earth life which could exist on other planets...

They even set up an Analog Mars Mission with communications trailer, time-delay on comms, divers as 'astronauts' submersibles as rovers, ROV & Autonomous Underwater Vehicles all conducting research on the lake as part of the project.

http://www.pavilionlake.com

Looks like the website isnt managed now the project is finished as video and image links are broken.

This topic has given me incentive to go on a camping / dive trip to check them out

Regards


Adam

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#9 lutfu

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Posted 07 July 2018 - 08:09 PM

Hello   No actually it wasn't as salty as ocean..it was so bitter though.....and it was a bit like diving in silicone because the form of the water was strange..  İt wasn't good for my ear and lips but im not 100 percent sure if it was because of the water.  but definitely not good for open injuries.

the interesting  thing about there was we went there to film microbialites but we found an unknown part of an  urartu castle from 700 bc

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#10 lutfu

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Posted 07 July 2018 - 08:13 PM

Thanks Benedika  it was really interesting I definitely want to back there again since I scratched my port and the best parts (According to me) I had to film with a scratched port..



#11 lutfu

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Posted 07 July 2018 - 08:15 PM

Hello Adam

Thanks for the interest and I didn't know that microbialites are such beautiful and interesting things.

I definitely have to go again

will be appreciated if you go and share your experiences here

regards

Lutfu



#12 adamtaylor

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Posted 13 July 2018 - 06:56 AM

Hello Adam
Thanks for the interest and I didn't know that microbialites are such beautiful and interesting things.
I definitely have to go again
will be appreciated if you go and share your experiences here
regards
Lutfu

I will definitely share video clips if I go.

In the meantime I saw this article this morning

https://www.scientif...ooks-like-mars/

Regards


Adam

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#13 lutfu

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Posted 13 July 2018 - 12:12 PM

I will definitely share video clips if I go.

In the meantime I saw this article this morning

https://www.scientif...ooks-like-mars/

Regards


Adam

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İnteresting

the ones in lake Van were more look like New York though :)
 

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#14 lutfu

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Posted 13 July 2018 - 12:15 PM

2 more here

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#15 lutfu

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Posted 08 November 2018 - 09:05 AM

From same lake again

 


Edited by lutfu, 08 November 2018 - 09:16 AM.