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The non-devilish deeds of the Devil's Island - Hydrological studies on the Käsmu Peninsula

Student(s):Marit Mesi, Aljaž Starič, Julija Zver, Ekaterina Likhacheva, Sofja Gorpintsenko, Polina Ivanova, Clealyandra Arm, Anneli Oro, Ivan Nikanorov, Akim Zavihhonov
Grade Level:Secondary School (grades 9-12, ages 14-18)
GLOBE Educator(s):Ronald Laarmaa
Contributors:Kalle Kallas Johanna Raudsepp Laura Altin
Report Type(s):International Virtual Science Symposium Report
Protocols:Alkalinity, Conductivity, Dissolved Oxygen, Nitrates, pH, Water Temperature, Water Transparency
Presentation Poster: View Document
Optional Badges:Be a Collaborator, Be a STEM Professional
Date Submitted:03/06/2023
We wanted to find out if Devil's island influences the water chemistry of Rotten Bay and Käsmu Bay, also we wanted to know which bay’s chemical status is better. For this, we did fieldwork in four different sites, two sites in Rotten Bay and two in Käsmu Bay, near Käsmu Peninsula, Lääne-Viru County, Estonia. Our Hypotheses were: 1. The Devil's island affects the water temperature and the oxygen level in Käsmu Bay positively. 2. It is better to swim in Rotten Bay because of higher water transparency and warmer water. 3. The Devil's island influences the water chemistry of the bays. We used the GLOBE Program´s hydrology protocols to analyze the water parameters. The analyzed parameters were: water temperature, dissolved oxygen, pH level, conductivity, alkalinity, nitrates and transparency. In the end, out of our three hypotheses one was proven true and two were proven partially true.