Student Research Reports
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DOWN THE CETINA RIVER
Organization(s):OS Josip Pupacic
Country:Croatia
Student(s):Karmen Jelović, Ema Kegalj, Josip Vilić
Grade Level:Middle School (grades 6-8, ages 11-14)
GLOBE Teacher:Ivica Štrbac
Contributors:
Report Type(s):Standard Research Report
Protocols:Soil Infiltration, Soil Particle Density, Soil Particle Size Distribution, Soil pH, Soil Temperature
Language(s):Croatian
Date Submitted:03/03/2022
The aim of the study is to compare the properties of different soil samples in the Cetina River basin by GLOBE protocols. Considering that the Cetina River basin covers a wide area where a number of geomorphological structures occur, most of which is composed of carbonate rocks, mainly limestone, soil properties were investigated at nine sites from the mouth to the source of the Cetina River. Pedological research has determined the consistency, structure and texture of the soil, the pH value of the soil, the permeability of the soil and water retention, and the change in the electrical conductivity of tap water by passing through different soil types. The results of the research showed that sandy soils have significantly higher permeability than soils in karst fields that have more clay in their composition and that by increasing the electrical conductivity of tap water it can be seen that more substances dissolve in water passing through sandy soil compared to loam and clay soils. Considering that the Cetina River basin covers a wide area where a number of geomorphological structures occur, most of which is composed of carbonate rocks, mainly limestone, soil properties were investigated at nine sites from the mouth to the source of the Cetina River. Pedological research has determined the consistency, structure and texture of the soil, the pH value of the soil, the permeability of the soil and water retention, and the change in the electrical conductivity of tap water by passing through different soil types. The results of the research showed that sandy soils have significantly higher permeability than soils in karst fields that have more clay in their composition and that by increasing the electrical conductivity of tap water it can be seen that more substances dissolve in water passing through sandy soil compared to loam and clay soils.