IS428 AY2019-20T1 Assign Nurul Khairina Binte Abdul Kadir TaskFindings
VAST 2019 MC1: Crowdsourcing for Situational Awareness
|
|
|
|
|
Question: Emergency responders will base their initial response on the earthquake shake map. Use visual analytics to determine how their response should change based on damage reports from citizens on the ground. How would you prioritize neighborhoods for response? Which parts of the city are hardest hit? Limit your response to 1000 words and 10 images.
Contents
Insights
Summary | Detailed Description | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
The source of the earthquake (epicenter) appears to be located near the 12th of July Bridge and Himark Bridge on 6 April 2020. The shaking is weak. However, the shaking got stronger on 8 April and more cities were affected by the earthquake. From the shake map, we can see that the following cities are more likely to be greatly affected by the earthquake. Cities sorted by perceived damage: Old Town, Safe Town, Cheddarford, Pepper Mill, Wilson Forest, Easton, East Parton, West Parton, and Terrapin Springs. | |||||||||||||||||||
The damage type filter is set to Shake Intensity for this analysis. Refer to the numbers on the chart to follow along:
| |||||||||||||||||||
The purpose of this dashboard is to identify the hardest-hit areas. The earthquake started on 8 April, 8 AM based on the analysis of the previous dashboard and we can confirm these findings with this dashboard. For the Average Shake Intensity By Day / Hour chart, the gaps in the chart indicate that no reports (for all damage types) were made. Null impact scores are not filtered out in this chart. Therefore, if the user hover over the data points and the average shake intensity is empty, it means that the impact score is Null. The hardest-hit areas appear to be Old Town, Safe Town, Pepper Mill, and Wilson Forest. This is supported by the shake map analysis since the neighbourhoods are located near to the epicenter of the earthquake and we can expect these neighbourhoods to be more affected by the earthquake. We can also identify anomalies in the data for Old Town and Wilson Forest. For Old Town, the neighbourhood is most likely to be greatly affected by the earthquake due to its close proximity to the epicenter, but no reports were made 1 to 2 hours after the earthquake on 8 April, 8 AM. A possible reason was that the earthquake resulted in a power outage and the citizens were unable to report the damages. As for Wilson Forest, the power outage situation appears to be worse since reports were made at the start of the earthquake on 8 April, 8 AM. Before the earthquake, no reports were made except for 6 April, 2 PM. (The other data points before the earthquake have Null shake intensity impact scores) For the Shake Intensity By Impact Level chart, the purpose is to show the variation in impact levels reported and to identify cities that are hardest hit. There are 2 options to view this chart – Horizontal or Vertical. On 8 April, Old Town, Broadview, and Scenic Vista are consistently the top 3 cities based on the number of reports with an impact level of strong, very strong and violent. With reference to the average shake intensity chart, the average shake intensity for Old Town is higher than in other cities. The average for Broadview and Scenic Vista is not as high as Old Town. This shows that areas that are hardest hit may not always have a high number of reports. Therefore, using the mode of the impact score seems to be a better option in assessing the extent of the damage. The Maximum Shake Intensity By Neighbourhood chart can be used to observe the number of records made over time as well as the intensity of the shaking. For instance, set the filter of ‘Select Neighbourhood’ to Old Town and we can see that the maximum shake intensity for Old Town on 8 April, 8 AM is 9 out of 10. | |||||||||||||||||||
From the shake intensity charts, we can deduce that the following cities need more help from 8 April, 8 AM to 11 AM: Old Town, Safe Town, Pepper Mill, and Wilson Forest. The number of reports made by neighborhood chart also shows that areas that are hardest hit may not always have a high number of reports. Therefore, using the mode of the impact score seems to be a better option in assessing the extent of the damage instead of solely using the number of records in our analysis. | |||||||||||||||||||
The time frame for this analysis will be 8 April 8 AM to 11 AM. The hardest-hit areas identified in the previous dashboards are Old Town, Safe Town, Pepper Mill, and Wilson Forest. Taking this into consideration, we can further analyze the intensity of each damage type across the city in this dashboard. Do note that Wilson Forest is considered a high priority area despite the lack of reports. An assumption made is that the emergency response team comprise of different divisions and responders are specialized or trained to deal with a specific damage type. The following cities should receive a higher priority:
|