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GL3 2007 Jan Q1 Volcanic Hazards Teide. 1. Figure 1 is a map showing past and potential volcanic hazards for the island of Tenerife.

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Presentation on theme: "GL3 2007 Jan Q1 Volcanic Hazards Teide. 1. Figure 1 is a map showing past and potential volcanic hazards for the island of Tenerife."— Presentation transcript:

1 GL Jan Q1 Volcanic Hazards Teide

2 1. Figure 1 is a map showing past and potential volcanic hazards for the island of Tenerife.

3 Refer to the data in Figure 1. (a) (i) For each of the following hazards, state one characteristic that may cause loss of life and property damage during a volcanic eruption. [2] Pyroclastic flows Ash falls

4 Refer to the data in Figure 1. (a) (ii) Contrast the potential hazards that could occur at Santa Cruz and Chio if the volcano erupted as predicted. [2]

5 Refer to the data in Figure 1. (a) (iii) Describe the type of data that might have been collected in order to produce this hazard map. [3]

6 Refer to the data in Figure 1. (b) (i) Using the evidence from Figure 1, explain how the valleys of Güimar and La Orotava might have been formed. [2)

7 Refer to the data in Figure 1. (b) (ii) Explain how the formation of these valleys may have caused devastation in coastal areas many hundreds of kilometres from Tenerife. [3]

8 Refer to the data in Figure 1. (a) (i) For each of the following hazards, state one characteristic that may cause loss of life and property damage during a volcanic eruption. [2] Pyroclastic flows Hot/fast Ash falls Thick/choking/heavy/roof collapse

9 Refer to the data in Figure 1. (a) (ii) Contrast the potential hazards that could occur at Santa Cruz and Chio if the volcano erupted as predicted. [2] No pyroclastic flows in S. Cruz Less ash fall at S. Cruz 4-2m cf >10m

10 Refer to the data in Figure 1. (a) (iii) Describe the type of data that might have been collected in order to produce this hazard map. [3] Topography – to predict path of lava flows Thickness of previous deposits – potential scale Chemical analysis of deposits – type of eruption Prevailing wind direction – distribution of ash deposits Records of previous eruptions

11 Refer to the data in Figure 1. (b) (i) Using the evidence from Figure 1, explain how the valleys of Güimar and La Orotava might have been formed. [2) Landslide induced by volcanic activity Related to offshore debris material

12 Refer to the data in Figure 1. (b) (ii) Explain how the formation of these valleys may have caused devastation in coastal areas many hundreds of kilometres from Tenerife. [3] Tsunamis Origin/wavelength/amplitude, speed Effect of shallowing water Little energy reduction


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