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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
Analysis of Figure 5a
Answer
Figure 5a provides a clear depiction of the geographical variation in global sea level changes from 1992 to 2014. The map outlines areas experiencing significant eustatic changes, particularly the regions with higher temperatures correlating with greater sea level rise. This visual representation allows for an immediate understanding of affected areas, showing the highest rates of sea level increase in specific locations, reinforcing the correlation between climate change and rising sea levels.
Step 2
Analysis of Figure 5b
Answer
In contrast, Figure 5b extends the analysis to 2019, presenting data that shows a continuation of trends observed in Figure 5a but also includes newer data points. This figure highlights variations in sea level changes and potentially reveals additional areas of concern that may not have been reflected in the earlier data. The longer timescale allows for a more comprehensive evaluation of the factors affecting sea level changes over time, thus emphasizing the importance of updated data in monitoring eustatic sea level change.
Step 3
Comparison and Evaluation
Answer
Both figures illustrate significant patterns in sea level change; however, they also complement each other. Figure 5a provides foundational information while Figure 5b offers a more recent perspective, capturing evolving trends. The two figures together allow for a more thorough analysis of how eustatic sea level change manifests over time, including spatial and temporal patterns. This suggests that using both sources is essential for a robust understanding of sea level changes, where each figure enhances the utility of the other.