Unique animal fossils from millions of years ago at the 25th Science Picnic – Jedynka

  • Very often, large rivers are mentioned, the basins of which exceed 50 thousand. km2.
  • 90 percent of watercourses do not meet the conditions for good water quality and this is a daily problem – said Prof. Paweł Rowiński.
  • In Poland, the number of sewage treatment plants has increased significantly.
  • For inland shipping to function properly, there must be waterways on which ships can navigate safely.

Water of increasingly poor quality

The river is a natural surface watercourse that flows in a channel carved by river erosion and periodically overflows the river valley. – Very often, large rivers are called those with basins of more than 50 thousand. km2. In the case of Poland, this condition is met by the rivers Vistula, Odra and Warta – explained Prof. Paweł Rowiński, vice president of the Polish Academy of Sciences, hydrologist, long-term director of the Institute of Geophysics of the Polish Academy of Sciences .

Jedynka’s guest pointed out that the water quality in rivers is getting worse every year. – We don’t have enough quality yet. 90 percent of watercourses do not meet the conditions of good water quality and this is an everyday problem – he estimated.

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24:06 Jedynka / Eureka 3.01.2201.mp3 Major rivers in Poland – what does it take to make them come alive? (Eureka / Single)

More and more purification installations

In Poland The number of wastewater treatment plants has increased significantly. Yet we still have a problem with pollution coming from other sources. – Treatment plants do not absorb everything. There are new types of pollution, incl. antibiotics or other drugs that we are dealing with – the expert explained. – There are also problems, problems related to water management itself. Many tasks are faced not only by hydrologists, but also by interdisciplinary teams such as nature, economics, urban planning, chemistry and humanities. We are quite delayed in this regard, and interestingly the Vistula is one of the least recognizable major European rivers – in summary Prof. Paweł Rowiński.

Polish rivers renaturation – is it necessary?

Restoring rivers means restoring them to their natural state. Krzysztof Michalski’s interlocutor explained that this process would not be possible in all Polish rivers. – For example, the river Odra has been transformed very radically and a return to nature would be very difficult – he added.

Inland Navigation in Poland

For inland shipping to function properly, there must be waterways on which ships can navigate safely. Although the length of these roads in Poland is statistically very long, their quality means that inland navigation is not used to the extent it could.

– On the Odra River, this navigation would be possible because it is a highly canalized river. (…) Loose goods, such as coal, are often transported over the rivers. I hope we will not have this coal in the future, because the problems with climate change are increasing. Investments in the construction of waterways take many years and take decades to complete. From an economic point of view, there is no justification for building waterways, as we have more and more dry spells and there will be times when hydrological conditions mean we won’t be able to carry anything through these rivers – the expert Jedynki added.

Prof. Paweł Rowiński was born on February 26, 1965 in Warsaw. His scientific interests include environmental hydrodynamics, river physics, mathematical modeling and experimental studies of hydrological and hydrophysical processes, river turbulence and transport processes, statistical methods in hydrology, methods of intelligent data analysis and climate change.

The broadcast also includes:

“Yield. Something about Jan Czochralski”

105 years ago, Professor Jan Czochralski developed a method to obtain single crystals, which allowed the creation of electronics. And in those days, the latest edition of the biography of this outstanding Polish scientist, “Return. A thing about Jan Czochralski ”- supplemented with new findings on the biography and achievements of Professor Czochralski.

The guest of the “Discovery Evening” was Dr. Paweł Tomaszewski of the Institute of Low Temperature and Structural Research of the Polish Academy of Sciences – a biographer of Professor Jan Czochralski, who will remember his greatest achievements. First of all – a method to measure the crystallization rate of metals, the development of Metal B – a tin-free alloy for railway bearings and a radio microscope, the prototype of modern scanning microscopes. He will also present the latest findings on Jan Czochralski’s life and scientific activity.

Also see:

Program title: “Explorers’ Evening” in the Eureka band

Leads: Krzysztof Michalskiz

Guests: Prof. Paweł Rowiński (Vice President of the Polish Academy of Sciences, hydrologist, long-term director of the Institute of Geophysics of the Polish Academy of Sciences), Dr. Paweł Tomaszewski (Institute for Low Temperature and Structural Research of the Polish Academy of Sciences)

Release date: January 3, 2022

Time of broadcast: 7.30 pm

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