a)
The seasonal changes in the amount of sea ice influencing the salinity of the remaining surface water.
a)
Answer to Problem 1GST
Surface salinity can vary seasonally at the poles as sea ice freezes and melts. When sea ice is formed, only the water portion of the ocean freezes, leaving behind all dissolved salts in the liquid ocean. This serves to increase the salinity. As sea ice melts, salinity decreases.
Explanation of Solution
Surface salinity in polar latitudes varies seasonally due to the formation and melting of sea ice. In winter, when the seawater freezes, only a small portion of salt becomes a part of ice and hence the salinity of the remaining water increases. During summer, when seawater melts, the freshwater from the melting ice gets added to the seawater by diluting the solution resulting in decrease in salinity.
b)
The density of water greater before or after the formation of sea ice.
b)
Answer to Problem 1GST
Water density is greater after sea ice forms because there is a greater concentration of dissolved solids left behind in the water.
Explanation of Solution
When sea ice is formed, only the water portion of the ocean freezes, leaving behind all dissolved salts in the liquid ocean. Hence, the water density will be greater after the formation of sea ice because there is a greater amount of dissolved solids left behind in the water.
Want to see more full solutions like this?
Chapter 14 Solutions
Earth Science
- Applications and Investigations in Earth Science ...Earth ScienceISBN:9780134746241Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. TasaPublisher:PEARSONExercises for Weather & Climate (9th Edition)Earth ScienceISBN:9780134041360Author:Greg CarbonePublisher:PEARSONEnvironmental ScienceEarth ScienceISBN:9781260153125Author:William P Cunningham Prof., Mary Ann Cunningham ProfessorPublisher:McGraw-Hill Education
- Earth Science (15th Edition)Earth ScienceISBN:9780134543536Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. TasaPublisher:PEARSONEnvironmental Science (MindTap Course List)Earth ScienceISBN:9781337569613Author:G. Tyler Miller, Scott SpoolmanPublisher:Cengage LearningPhysical GeologyEarth ScienceISBN:9781259916823Author:Plummer, Charles C., CARLSON, Diane H., Hammersley, LisaPublisher:Mcgraw-hill Education,