L3: Short-term drivers of sea level change

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4 Terms

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What are the three main mechanisms driving relative sea level change on a short time scale?

  • Tectonics

  • Storm surges

  • Ocean currents and winds

2
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How do tectonics influence relative sea level rise?

Subduction zone earthquakes can drive relative sea level changes at timescales from seconds to minutes (coseismic) to decades to centuries (interseismic) with magnitudes measured in metres.

3
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How do storm surges influence relative sea level and what are they caused by?

  • They are created predominantly by winds and can raise water levels by metres for hours to days.

  • They are short-lived but devastating.

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How do