Lecture 8

Question 1

Pre-event data collection techniques: Remote Acquisition

Answer 1

satellite imagery, volunteered geographic information, orthophotos, DEM, Land Cover, Geological and Geolithological maps, catalogue events, instrument records

Question 2

Pre-event data collection techniques: Field Survey

Answer 2

Built environment, natural environment, previous events, interview, check of remote data, geotechnical tests

Question 3

Post-event data collection techniques: Remote Acquisition

Answer 3

satellite imagery, volunteered geographic information, DEM, GPS, instruments, third-party event records

Question 4

Post-event data collection techniques: Field Survey

Answer 4

Building/Bridges tagging, unmanned aerial vehicles (UAV), random sample of material properties, interview, check of remote data, geotechnical tests

Question 5

Steps in collecting data

Answer 5

1. Funding:
   For remote data, we can use open-source data to have a preliminary idea, but at some point data needs to be verified i) with new data ordered to professional companies, or ii) by field trips.
   For recognisance efforts, need to organise trips etc.
2. Acquire as much remote data as possible to have a clear picture of the situation to either identify the area at risk to survey (pre-event) or the area most badly affected (post-event).
3. Identify local partners/authority to contact for: logistic help, authorizations
4. Tools: predefined survey forms (both paper and tablet version) % data storage plan, laser DISTO, GPS tracke, GPS camera, drones, health & safety equipment
5. organise trip
6. double check budget

Question 6

PHASE 1: Pre-mission preparation

Answer 6

1. Where to go?
   Look at shakemaps
   Coordination with other GEER survey groups
   Critical analysis of the Copenicus images
2. What was needed?
   Analysis and comprehension of AEDES form
   Implementation of the AEDES form in a user-friendly ACCESS database table-based for fast data acquisition
3. Instruments and tools
   GPS tracker
   Digital cameras with embedded GPS
   Google Tango

Question 7

PHASE 2: On-site operations

Answer 7

1. Building by building inspection
2. Geo-localisation, photos collection
3. Database preparation
4. Structural typologies identification

Question 8

PHASE 3: post-processing

Answer 8

1. Unique ID
2. Photos of damaged buildings
3. Pre-quake pictures
4. Damage state
5. Shapefile and KMZ creation