Phivolcs Report

7/29/2019 Phivolcs Report

1/12

Tsunami ThresholdsSource Parameters Templates

Local 6.5 M < 7.0 & D 10 km

7.0 M < 7.5 & D 20 km

7.5 M < 8.0 & D 60 km M 8.0 & D 80 km

Tsunami Alert Level 3

Regional

Taiwan

Ryukyu, JapanSulawesi, IndonesiaMarianas

7.0 < M & D


2/12

PHIVOLCS Tsunami Alert Levels

Alert Level 0 Large earthquake

No tsunami was generated

No threat to the Philippines

Information only

Alert Level 1 Possible tsunami

Potential threat On Alert; Stand-by for

Possible Evacuation

Alert Level 2 Confirmed tsunami

Non-destructive

Advisory

Alert Level 3 Confirmed tsunami

Destructive

Evacuation isrecommended


3/12

Tsunami Events

Local Source region is within the

territorial coverage of thePhilippines

Philippines

Distant Source region is not within

the territorial coverage of

the Philippines Regional / Teleseismic

Regional Source region is near the

territorial coverage of thePhilippines

Indonesia, Taiwan,

Marianas

Teleseismic Source region is far from

the territorial coverage of

the Philippines Japan, Kurile, Aleutian,

Alaska, Chile, New Zealand


4/12

Example of Instrumentations in Each of the Satellite-telemetered UnmannedStations of PHIVOLCS

Seismic vault, solar paneland VSAT antenna

Digitizer and VSATmodem / transmitter

Batteries and solarcharger regulator

Three component short-period sensors

Abra Station


5/12

Example of seismic waveforms transmitted to the DataReceiving Center in Quezon City via satellite


6/12

Data Receiving Center/ Tsunami Warning Center(under renovation to accommodate new systems and

efficient implementation of SOP)

Di it l S i t PHIVOLCS DOST L L S i i


7/12

Digital Seismogram at PHIVOLCS-DOST Lapu-Lapu SeismicStation

Showing the 11:49AM 2012 February 6 Negros OrientalEarthquake Mainshock and Aftershocks


8/12


9/12

1948 M8.31962M7.6

1925M6.81955

M6.1


10/12

Philippines is an earthquake-prone country


11/12

Communication Scheme forTrans-PacificTsunami

Earthquake

PTWC

NWPTIC

PHIVOLCS

OCDNDCC

OCD RCRDCC

LGUsDCC

PAGASA

PUBLIC

MEDIA

GTS

FAX

EMAIL

Phone

FAX

PHONE

FAXPHONE

FAXPHONE

FAX

PHONE

FAXPHONESSB Radios

FAXPHONESSB Radios

SirenPublic Address System

Radio BroadcastsTV broadcasts

FAXPHONE

NAMRIA

Office ofthe

President

Mass TextingCompany(GLOBE or

SMART)

3rd Training Workshop on the Development of End-to-End Tsunami Standard Operating Procedures


12/12

Hazard Prone Area Signage Directional Signage Evacuation Site Signage

Tsunami Signage

Phivolcs Report

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