Modeling of the earth’s crust and upper mantle beneath central part of Java Island using receiver function data

Amukti, Rian; Yunartha, Nur Achid; Anggraini, Ade Eka; Suryanto, Wiwit

doi:10.1063/1.5139736

Cited by 3 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous studies on crustal structure have been carried out in Indonesia using the receiver function method, including in the island of Sumatera, where the thickness of the earth's crust varies from 16 km to 40 km (Kieling et al, 2011;Macpherson et al, 2012;Bora et al, 2016). Other researchers performed the receiver function study in the island of Java where the thickness of the crust in the western part of the island was 25-37 km (Syuhada and Anggono, 2016; Anggono et al, 2020), in the central and east part of Java island about 25-39 km (Wölbern and Rümpker, 2016;Amukti et al, 2019). Recently, the receiver function study using limited number of stations in Borneo or Kalimantan Island was carried out by Bahri et al, 2021.…”

Section: Introductionmentioning

confidence: 99%

Sediment Thickness and Moho Depth Beneath Western Indonesian Region From Teleseismic Receiver Function

Bahri

Suryanto

Ngadmanto

2021

Preprint

Self Cite

View full text Add to dashboard Cite

The Earth's crust layer and sediment in Western Indonesia has been studied using the inversion of teleseismic receiver function from BMKG’s seismic network. Earthquake events were analyzed in this study with a moment magnitude greater than 6.0 with epicentral distances of 30° to 90°. A total of 60 earthquake events were observed and recorded by 91 stations around the study area. Furthermore, an inversion process was carried out using the initial velocity model from the modification of the AK135f velocity model to obtain the shear wave velocity structure below each stations. The velocity model from the azimuthally stacked vertical receiver function showed that the sediment layer had a relatively medium shear wave velocity value with an average of 2.1 km/s, while the crust layer had 4.60 km/s. The sedimentary layer thickness in this region also varies between 2 km to 10 km. A relatively thick sediment layer of about 8 km to 10 km was observed in two locations, in East Kalimantan associated with the Kutai Basin and Northern part of Sumatera in the North Sumatera Basin, a two major oil producer basinal area in Indonesia. The Moho discontinuity was also found at depths that vary between 16 km to 50 km. In addition, the most shallow Moho depth is 16 km below the North Kalimantan and North part of West Java, while the deeper Moho depth of 50 km is located below East Kalimantan, Central Kalimantan, North Sumatera and South Sumatera.

show abstract

Section: Introductionmentioning

confidence: 99%

Sediment Thickness and Moho Depth Beneath Western Indonesian Region From Teleseismic Receiver Function

Bahri

Suryanto

Ngadmanto

2021

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…For Central Java, we consider both a single-patch and multi-patch parametrization of the domain to show the capabilities of multi-patch isogeometric analysis. The results can be compared with the Mohorovičić depth data obtained using inversion of receiver functions from the work of Amukti et al (2019). A Mohorovičić depth map is available for the European Plate (Grad et al, 2009), which is also used to estimate model parameters in Sect.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Isogeometric analysis of the lithosphere under topographic loading: Igalith v1.0.0

Rosandi,

Simeon

2024

Preprint

View full text Add to dashboard Cite

Abstract. This paper presents methods from isogeometric finite element analysis for numerically solving problems in geoscience involving partial differential equations. In particular, we consider the numerical simulation of shells and plates in the context of isostasy. Earth's lithosphere is modeled as a thin elastic shell or plate floating on the asthenosphere and subject to topographic loads. We demonstrate the computational methods on the isostatic boundary value problem posed on selected geographic locations. For Europe, the computed lithospheric depression is compared with available Mohorovičić depth data. We also perform parameter identification for the effective elastic thickness of the lithosphere, the rock density, and the topographic load that are most plausible to explain the measured depths. An example of simulating the entire lithosphere of the Earth as a spherical shell using multi-patch isogeometric analysis is presented, which provides an alternative to spherical harmonics for solving partial differential equations on a spherical domain.

show abstract

Crustal and The Uppermost Mantle Structure in Eastern Indonesia From Telese`ismic Receiver Function

Harsoni

Ngadmanto

Suryanto

2021

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

In this study, we used receiver function technique to determine the shear wave velocity profile of the crust and uppermost mantle beneath the eastern part of Indonesia region. We use six BMKG’s permanent stations in the Eastern Indonesia region that recorded about 70 teleseismic events. The receiver function inversion shows a significant variation of sediment thickness layer from about 2 to 4 km in the West Papua region. The crustal thickness variation is estimated at 17 km to 19 beneath Ternate Island and northern Sulawesi, whereas the crustal thickness beneath of the West Papua Region is at 24 km and 37 km. The lithosphere thickness estimate at 40 km to 48 km in Ternate Island and northern Sulawesi while the West Papua Region is around 60 km to 76 km. We found the evidence for a strikingly low-velocity layer starting at about 28 to 30 km depth beneath Ternate islands and northern Sulawesi that may relate to the partial melting zone beneath the active volcano in those areas.

show abstract

Modeling of the earth’s crust and upper mantle beneath central part of Java Island using receiver function data

Cited by 3 publications

References 16 publications

Sediment Thickness and Moho Depth Beneath Western Indonesian Region From Teleseismic Receiver Function

Sediment Thickness and Moho Depth Beneath Western Indonesian Region From Teleseismic Receiver Function

Isogeometric analysis of the lithosphere under topographic loading: Igalith v1.0.0

Crustal and The Uppermost Mantle Structure in Eastern Indonesia From Telese`ismic Receiver Function

Contact Info

Product

Resources

About