Herrera Airport

Group 2

Michael Ming Hei CalTech

María C Araya RSN

Cecilio Morales FUNVISIS

Dorian Restrepo CMU

Kenny García FUNVISIS

Claude Jean-Poix Haiti Gov

Outline

MethodsHVSRREMIMASWSPAC

Results

Conclusions

Herrera Airport (ReMI, Masw and SPAC)

HSVR West Profile

HVSR East Profile

N

HVSR

HVSR

Profile1 and Profile2

N

West Profile

East Profile

HVSR

HVSR

HVSR Result

West Profile

East Profile

1 2 3 4 5 6 7 80

0.5

1

1.5

2

2.5

3

3.5

Period profile

West-1East-1East-0West-0

Stations from South to North

Peri

od T

(sec)

ReMi – MASW Profiles

3 profiles

Remi & MASW 1

Remi 2

Remi 3

ReMi

MASW

ReMi Profiles ReMi Airport 1shear velocity (m/s) Depth (m)layer best deviation best deviation

1 680.621 3% 0 8%2 1211.829 3% 24 13%3 1114.129 4% 39 11%4 1278.423 4% 94 9%5 2092.552 6% 172

ReMi Airport 2shear velocity (m/s) Depth (m)layer best deviation best deviation

1 793.319 4% 0 15%2 965.06 8% 27 20%3 1064.38 4% 42 14%4 1330.011 10% 104 6%5 2113.582 2.50% 149

ReMi 3shear velocity (m/s) Depth (m)layer best deviation best deviation

1 394.319 3% 0 11%2 619.908 7% 14.8 18%3 904.862 7% 24.4 18%4 1082.958 5% 51

MASW Profile

MASW Airport 1shear velocity (m/s) Depth (m)layer best deviation best deviation

1 408 6% 0 10%2 832 10% 9.5 20%3 1486 4% 24.54 1278 40

ReMi & MASW Profiles

670 IBC Class C

768 IBC Class B802 IBC Class B518 IBC Class C

Vs30

MASW

ReMi

Methods

SPAC Two Arrays

Array 2

Array 1

Geopsy Spac2dis

p dinver

SPAC: Three step procedure

TARGETED PROFILE

Results At Herrera Airport400 800 1200 1600 2000 24000

40

80

120

160

200

Shear Velocity (m/s)

Depth

(m

)

SPAC South

ReMi 1 (Black solid line)

Results At Herrera Airport0 1000 2000 3000

0

40

80

120

160

200Shear Velocity (m/s)

Depth

(m

) SPAC North

ReMi 2 (Black solid line)

ConclusionsHerrera Airport

ConclusionsHVSR

3 periods for each site

discarded the biggest cause of high uncertainty.

The other 2 were between 0.3 - 0.4 hz and 0.8 - 1.4 hz

MASW The only profile was

compared with REMI showing a good fit between them

REMI 5 layers Max depth around 160m

and > 2000 m/s for Vs. Low velocity layer between

45 - 100m of depth Airport soil is Class B

SPAC No low frequencies at the p-f

plot, which make it difficult to identify this range.

Spac results present high misfit. They however are in good agreement with other methods

Conclusions

HVSR High influence on high

frequencies. Uncertainty in the analysis. Provides a fast estimate of

the basin shape and depth.

MASW Easy to make the site

caracterizacion but it takes more time for the acquition of data.

REMI Easy to classify a site

and do the caracterization.

Very fast analysis, and good resolution of penetration.

SPAC Time consuming on data

acquisition and analysis. Special needs for the

site to be able to do the acquisition.

Thank YouAny questions?