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Using only Figures 5a and 5b, evaluate the relative usefulness of these sources in demonstrating eustatic sea level change - AQA - A-Level Geography - Question 3 - 2022 - Paper 1
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Using only Figures 5a and 5b, evaluate the relative usefulness of these sources in demonstrating eustatic sea level change. Figure 5a shows geographical variation i... show full transcript
Worked Solution & Example Answer:Using only Figures 5a and 5b, evaluate the relative usefulness of these sources in demonstrating eustatic sea level change - AQA - A-Level Geography - Question 3 - 2022 - Paper 1
Step 1
Clear analysis of the quantitative evidence provided
Answer
Both Figures 5a and 5b display geographical variations in global sea level change over different periods. Figure 5a captures data from 1992 to 2014, while Figure 5b extends this analysis to 2019. The relatively short time frame of Figure 5a may limit its ability to show long-term trends compared to Figure 5b.
Figure 5a highlights areas with substantial sea level changes, particularly emphasizing regions such as the western Pacific and Eastern Atlantic, which show significant variability. Figure 5b, on the other hand, continues this trend into a later time frame, allowing for a more comprehensive overview of sea level patterns, especially in coastal regions of South America, which is crucial for understanding longer-term eustatic changes.
Step 2
Connection(s) between different aspects of the evidence
Answer
Both figures provide valuable insights into sea level changes but differ in their temporal coverage and resolution. Figure 5b's longer period of data collection captures potential alterations and trends not visible in the earlier figure, allowing for an assessment of how sea levels are changing over an extended period. This aspect is vital in evaluating the impact of factors like climate change and oceanic currents. Additionally, the similarities in patterns between both figures reinforce the significance of observed changes in coastal regions, allowing for a clearer understanding of the global context of eustatic sea level change.