PLATE 1

REMEDIOS, ELMER L. BSCE-5

EARTHQUAKE ENGINEERING

1. Enumerate the different seismic/earthquake occurrences in Mindanao in the last 2-years only. List the strongest Earthquake that hit Mindanao. 2. Make detailed description of each Earthquake occurrences in Mindanao according to our discussion. (Epicenter, Seismic Type of motion) why it occurred and all descriptive. 3. What is earthquake occurrence in Mindanao in the last 100 years ago except seismic/earthquake mentioned in item no. 1 4. What do you define and discuss about the seismic occurrences here in Mindanao with regards to our module-1 topics?

Source: https://earthquake.phivolcs.dost.gov.ph Date and Time (2019) JANUARY

Magnitude

Depth (km)

07 January 2019 11:11 AM

5.5

30km

16 January 2019 04:03 AM

6.0

40km

16 January 2019 06:53 PM

5.4

97km

Sarangani (Davao Occidental)

19 January 2019 02:51 AM

5.0

127km

22 January 2019 12:47 AM

5.1

3km

Sarangani (Davao Occidental) Sarangani (Davao Occidental)

FEBRUARY

Location

Baliguan (Zamboanga Del Norte) Governor Generoso (Davao Oriental)

Cause of Earthquake

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

REMEDIOS, ELMER L. BSCE-5 06 February 2019 07:17 AM

5.0

195km

08 February 2019 07:55 PM

5.9

11km

10 February 2019 06:21 AM

5.1

3km

10 February 2019 10:33 PM

5.0

2km

12 February 2019 04:01 PM

5.1

45km

Sarangani (Davao Occidental

06 March 2019 08:12 AM

5.5

14km

08 March 2019 11:06 PM

6.2

17km

Hinatuan (Surigao Del Sur) Burgos (Surigao Del Norte)

16 March 2019 07:07 AM

5.6

96km

Alabel (Sarangani)

01 April 2019 10:16 AM

5.4

28km

Loreto (Dinagat)

19 April 2019 03:29 PM

5.3

43km

Sarangani (Davao Occidental

26 April 2019 01:26 PM

5.5

11km

26 April 2019 02:04 PM

5.0

3km

26 April 2019 04:04 PM

5.5

12km

General Luna (Surigao Del Norte) General Luna (Surigao Del Norte) General Luna (Surigao Del Norte)

05 May 2019 09:56 AM

5.0

23km

31 May 2019 06:12 PM

6.0

78km

01 June 2019 05:45 PM

5.4

76km

06 June 2019 04:41 AM

5.4

476km

Palimbang (Sultan Kudarat)

5.6

36km

Makilala (North Cotabato)

Sarangani (Davao Occidental General Luna (Surigao Del Norte) General Luna (Surigao Del Norte) General Luna (Surigao Del Norte)

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

MARCH

Tectonic Origin Tectonic Origin Tectonic Origin

APRIL

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

MAY Marihatag (Surigao Del Sur) Governor Generoso (Davao Oriental)

Tectonic Origin

Governor Generoso (Davao Oriental)

Tectonic Origin Tectonic Origin

Tectonic Origin

JUNE

JULY 09 July 2019 08:36 PM

Tectonic Origin

REMEDIOS, ELMER L. BSCE-5 13 July 2019 04:42 AM

5.5

4km

03 August 2019 12:10 AM

5.6

144km

31 August 2019 09:02 PM

5.2

29km

5.0

46km

Carrascal (Surigao Del Sur)

Tectonic Origin

AUGUST Jose Abad Santos (Davao Occidental) Baganga (Davao Oriental)

Tectonic Origin

Jose Abad Santos (Davao Occidental)

Tectonic Origin

Tectonic Origin

SEPTEMBER 08 September 2019 09:49 PM

REMEDIOS, ELMER L. BSCE-5 10 September 2019 01:39 PM

5.8

59km

Governor Generoso (Davao Oriental)

18 September 2019 03:00 PM

5.6

28km

Sarangani (Davao Occidental)

29 September 2019 10:02 AM

6.4

63km

29 September 2019 03:40 PM

5.3

58km

Jose Abad Santos (Davao Occidental) Jose Abad Santos (Davao Occidental)

16 October 2019 07:37 PM

6.3

9km

Tulunan (North Cotabato)

16 October 2019 08:09 PM

5.5

9km

Tulunan (North Cotabato)

17 October 2019 04:53 AM

5.2

128km

Manay (Davao Oriental)

17 October 2019 02:18 PM

5.2

15km

Tulunan (North Cotabato)

19 October 2019 06:52 AM

5.0

17km

Tulunan (North Cotabato)

29 October 2019 09:04 AM

6.6

7km

Tulunan (North Cotabato)

29 October 2019 10:42 AM

6.1

9km

Tulunan (North Cotabato)

29 October 2019 04:33 PM

5.4

2km

Tulunan (North Cotabato)

30 October 2019 05:22 AM

5.0

5km

Makilala (North Cotabato)

31 October 2019 09:11 AM

6.5

8km

Tulunan (North Cotabato)

01 November 2019 10:33 AM

5.5

33km

Sarangani (Davao Occidental)

01 November 2019 02:07 PM

5.0

2km

Makilala (North Cotabato)

09 November 2019 03:57 AM

5.0

89km

18 November 2019 09:22 PM

5.9

6km

05 December 2019 08:24 PM

5.6

33km

15 December 2019 02:11 PM

6.9

9km

15 December 2019 03:09 PM

5.2

1km

18 December 2019 04:18 AM

5.3

10km

26 December 2019 12:56 AM

5.4

34km

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

OCTOBER

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

NOVEMBER

Sarangani (Davao Occidental) Kadingilan (Bukidnon)

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

DECEMBER Jose Abad Santos (Davao Occidental) Matanao (Davao Del Sur) Matanao (Davao Del Sur) Padada (Davao Del Sur) Sarangani (Davao Occidental)

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

REMEDIOS, ELMER L. BSCE-5 Date and Time (2020) JANUARY

Magnitude

Depth (km)

06 January 2020 02:58 AM

5.4

58km

12 January 2020 06:53 PM

5.0

28km

06 February 2020 09:40 PM

6.1

1km

20 February 2020 05:54 PM

5.1

193km

18 March 2020 11:13 AM

5.4

168km

26 March 2020 11:38 PM

6.1

48km

11 April 2020 02:45 AM

5.1

75km

12 April 2020 04:23 AM

5.1

126km

19 April 2020 09:09 PM

5.1

102km

27 April 2020 07:48 AM

5.2

43km

20 May 2020 08:45 PM

5.0

75km

30 May 2020 09:06 PM

5.6

71km

6.6

123km

26 July 2020 11:12 AM

5.6

63km

28 July 2020 01:32 AM

5.8

45km

Location

Cause of Earthquake

Governor Generoso (Davao Oriental) Cortes (Surigao Del Sur)

Tectonic Origin

Jose Abad Santos (Davao Occidental) Jose Abad Santos (Davao Occidental)

Tectonic Origin

Sarangani (Davao Occidental) Glan (Saranga ni)

Tectonic Origin

Jose Abad Santos (Davao Occidental) Sarangani (Davao Occidental) Sarangani (Davao Occidental) Jose Abad Santos (Davao Occidental)

Tectonic Origin

Tectonic Origin

FEBRUARY

Tectonic Origin

MARCH

Tectonic Origin

APRIL

Tectonic Origin Tectonic Origin Tectonic Origin

MAY Sarangani (Davao Occidental) Sarangani (Davao Occidental)

Tectonic Origin

Governor Generoso (Davao Oriental)

Tectonic Origin

Tectonic Origin

JUNE 04 June 2020 04:49 PM

JULY Manay (Davao Oriental Bayabas (Surigao Del Sur)

Tectonic Origin Tectonic Origin

REMEDIOS, ELMER L. BSCE-5 5.7

19km

Hinatuan (Surigao Del Sur

Tectonic Origin

02 August 2020 01:08 AM

6.5

537km

Tectonic Origin

16 August 2020 03:22 PM

5.1

611km

Cotabato City (Maguindana o) Kalamansig (Sultan Kudarat)

06 September 2020 11:23 PM

6.4

143km

Tectonic Origin

09 September 2020 11:41 AM

5.5

1km

09 September 2020 03:18 PM

5.9

1km

20 September 2020 09:28 PM

5.01

171km

21 September 2020 06:13 AM 21 September 2020 06:21 AM

5.7

22km

5.2

7km

24 September 2020 10:25 AM

5.2

16km

Don Marcelino (Davao Occidental) Sarangani (Davao Occidental) Sarangani (Davao Occidental) Don Marcelino (Davao Occidental) Bayabas (Surigao Del Sur) Bayabas (Surigao Del Sur) Bayabas (Surigao Del Sur)

5.3

15km

Tectonic Origin

5.0

55km

Bayabas (Surigao Del Sur) Dapa (Surigao Del Norte)

05 November 2020 02:27 AM

5.1

18km

Tectonic Origin

12 November 2020 03:18 PM

5.3

14km

16 November 2020 06:37 AM

6.0

54km

Burgos (Surigao Del Norte) Burgos (Surigao Del Norte) San Agustin (Surigao Del Sur)

16 December 2020 07:21 AM

6.2

20km

Tectonic Origin

25 December 2020 10:00 AM

5.8

88km

Sarangani (Davao Occidental) Sarangani (Davao

31 July 2020 02:06 PM

AUGUST

Tectonic Origin

SEPTEMBER

Tectonic Origin Tectonic Origin Tectonic Origin

Tectonic Origin Tectonic Origin Tectonic Origin

OCTOBER 01 October 2020 06:10 AM 13 October 2020 03:21 AM

Tectonic Origin

NOVEMBER

Tectonic Origin Tectonic Origin

DECEMBER

Tectonic Origin

REMEDIOS, ELMER L. BSCE-5

30 December 2020 12:21 AM

5.5

68km

Occidental) Sarangani (Davao Occidental)

Tectonic Origin

REMEDIOS, ELMER L. BSCE-5

Date and Time (2021) JANUARY

Magnitude

Depth (km)

Location

Cause of Earthquake

21 January 2021 08:23 PM

7.1

102km

Jose Abad Santos (Davao Occidental)

22 January 2021 06:45 PM

5.0

96km

24 January 2021 10:26 PM

5.2

12km

Jose Abad Santos (Davao Occidental) Bayabas (Surigao Del Sur)

Tectonic Origin Tectonic Origin

02 February 2021 10:37 PM

5.2

15km

Sarangani (Davao Occidental)

07 February 2021 12:22 PM

6.1

10km

08 February 2021 08:00 AM

5.7

62km

Magsaysay (Davao Del Sur Governor Generoso (Davao Oriental)

Tectonic Origin

FEBRUARY

Tectonic Origin Tectonic Origin Tectonic Origin

REMEDIOS, ELMER L. BSCE-5 24 February 2021 06:25 AM

5.2

110k m

Sarangani (Davao Occidental)

Tectonic Origin

5.0

63km

Sarangani (Davao Occidental)

Tectonic Origin

01 April 2021 06:12 PM

5.2

27km

Tectonic Origin

07 April 2021 04:08 AM

5.1

98km

10 April 2021 05:30 PM

6.1

14 April 2021 02:38 AM

5.1

326k m 34km

Sarangani (Davao Occidental) Jose Abad Santos (Davao Occidental) Sarangani (Davao Occidental)

17 April 2021 04:55 AM

5.4

58km

06 May 2021 02:21 PM

5.1

19km

Magsaysay (Davao Del Sur)

11 May 2021 01:25 AM

5.3

60km

13 May 2021 02:20 AM

5.6

38km

Jose Abad Santos (Davao Occidental) Sarangani (Davao Occidental)

22 May 2021 07:56 AM

5.2

52km

23 May 2021 10:02 AM

5.6

113k m

06 June 2021 11:20 AM

5.1

8km

Burgos (Surigao Del Norte)

08 June 2021 05:41 AM

5.3

5km

10 June 2021 10:42 AM

5.1

48km

14 June 2021 10:38 PM

5.7

12km

Burgos (Surigao Del Norte) Jose Abad Santos (Davao Occidental) Kadingilan (Bukidnon)

14 June 2021 10:49 PM

5.2

2km

27 June 2021 03:14 PM

5.1

33km

MARCH 13 March 2021 04:13 AM

APRIL

Jose Abad Santos (Davao Occidental) Sarangani (Davao Occidental)

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

MAY

Don Marcelino (Davao Occidental) Jose Abad Santos (Davao Occidental)

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

JUNE

Kadingila n (Bukidnon ) Bayabas (Surigao Del Sur)

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic

REMEDIOS, ELMER L. BSCE-5

29 June 2021 03:35 PM

5.0

146k m

Sarangani (Davao Occidental)

08 July 2021 06:09 PM

5.2

12km

10 July 2021 08:43 AM

6.2

64km

Jose Abad Santos (Davao Occidental) Sarangani (Davao Occidental)

10 July 2021 08:51 AM

5.4

76km

18 July 2021 08:09 AM

5.4

63km

Origin Tectonic Origin

JULY

21 July 2021 04:26 AM

Sarangani (Davao Occidental) Governor Generoso (Davao Oriental)

5.3

79km

Jose Abad Santos (Davao Occidental)

12 August 2021 01:46 AM 12 August 2021 11:42 PM

7.1

59km

5.1

12km

12 August 2021 11:53 PM

5.6

54km

13 August 2021 04:17 AM 13 August 2021 04:28 AM 14 August 2021 03:00 AM 14 August 2021 09:27 AM 14 August 2021 06:30 PM

5.3

35km

5.1

1km

5.2

15km

5.3

44km

5.0

33km

25 August 2021 08:03 PM 27 August 2021 06:22 PM

5.0

23km

Governor Generoso (Davao Oriental) Tarragona (Davao Oriental) Tarragona (Davao Oriental) Tarragona (Davao Oriental) Governor Generoso (Davao Oriental) Tarragona (Davao Oriental) Governor Generoso (Davao Oriental) Burgos (Surigao Del Norte) Olutang

5.7

34km





Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin

AUGUST

SEPTEMBER 

(Zamboanga Sibugay)

Sarangani (Davao Occidental) 

Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin Tectonic Origin



REMEDIOS, ELMER L. BSCE-5

Cause of Natural Earthquake: Volcanic Origin – the main cause of earthquake is volcanic eruption. These earthquakes occur in area with frequent volcanic activities. Tectonic Origin – earthquake produced by sudden movement along faults and plate boundaries. Manmade Origin – some cause of earthquake is due to human activities such as, buildingexplosion, bombing, creating dams, mining that cause of void in the ground, etc

REMEDIOS, ELMER L. BSCE-5

REMEDIOS, ELMER L. BSCE-5

Earthquake Occurrence in Mindanao in the last 100 years ago

Manmade: Mining On January 4, 2012, at least 25 people have been killed and 150 more are missing after a landslide struck a mining village in the southern Philippines. The landslide occurred at about 3:00 a.m. on Thursday (19:00 GMT Wednesday) in Pantukan, Compostela Valley Province, on Mindanao Island. i) On September 8, 2008, when Apex Mining collapsed due to landslide. Dam i) Dam collapsed in Cagayan De Oro way back Dec. 2011 Bombing i) 15 people have died, and at least 77 were injured following two explosions in a busy town area of Jolo, Sulu Island, in Mindanao on 24 August 2020. Volcanic: In the range of 100 years ago or 1921-2021, there is no data of Volcanic eruptions that cause an Earthquake in Mindanao. The last volcanic activity was July 1916, and it was Mt. Ragang, located at Lanao Del Sur, Mindanao. Source: https://www.volcanodiscovery.com/mindanao.html

Seismic Occurrences in Mindanao Seismic waves When a sudden break or shift occurs in the earth's crust, the energy radiates out as seismic waves. Types of Seismic Waves: Body waves move through the inner part of the earth Surface waves travel over the surface of the earth. There are two main types of Body waves: (Primary and Secondary Waves) Primary waves, also called P waves or compressional waves, travel about 1 to 5 miles per second, depending on the material they're moving through. Secondary waves, also called S waves or shear waves, lay a little behind the P waves.