Post on 22-Jan-2018
Social Media Sensing for Disaster Situation
@alramadona
Situation
Kalutara district, Sri Lanka
• 24th May 2016: heavy rainfall
• 25th May 2016: disaster due to rapidly rising river water levels
within the next 24 hours many areas in the district were affected by strong winds, flash floods and landslides
Twitter Data
• Streaming API
all keyword: flood, landslide, disaster, gan watura, naya yama, marana, hadisi apada, Kalutara, Sri Lanka
flood
marana
Sri Lanka
Daily Twitter users in Sri Lanka
all user
user with location data
< 50% of all user
Apr 15 May 01 May 15 Jun 01
05
00
10
00
15
00
t
12
34
5
user
tweet
tweet per user
GLOBAL
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
20
04
00
60
08
00
10
00
flood
landslide
disaster
marana
srilanka
kalutara
24th May 2016
keyword: flood
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
02
00
40
06
00
80
01
00
0
Global
Srilanka
24th May 2016
Keyword: landslide
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
05
01
00
15
0
Global
Srilanka
24th May 2016
keyword: disaster
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
01
00
20
03
00
40
05
00 Global
Srilanka
24th May 2016
keyword: marana
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
05
01
00
Global
Srilanka
24th May 2016
keyword: Sri Lanka
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
01
00
20
03
00
40
0
Global
Srilanka
24th May 2016
keyword: Kalutara
time
2017-04-11 2017-04-16 2017-04-21 2017-04-26 2017-05-01 2017-05-06 2017-05-11 2017-05-16 2017-05-21 2017-05-26 2017-05-31
05
10
15
Global
Srilanka
24th May 2016