3D Data Fusion

Crustal Modeling WDO

Workflow-Driven Ontology about the process of creating a 2D crustal model of the subsurface of the Earth. The process uses receiver function data, gravity data, and magnetic data to create the model. The field of application is Geophysics. This process was originally documented by Dr. Randy Keller, and later refined by Dr. Musa Hussein.

Keyword(s): 
geophysics
crustal model
receiver function
gravity
magnetic
Research Effort: 
Point(s) of Contact: 
Type: 
Workflow-Driven Ontology

Leonardo Salayandia

Title(s): 
Research Specialist
PhD Student

Leonardo Salayandia is a Research Specialist at the CyberShARE Center of Excellence under the supervision of Dr. Ann Q. Gates. His research efforts involve the application of software engineering principles and semantic web technologies to build tools that help scientists to create, manage, and execute processes that model their scientific tasks.

Crustal Models from the Salton Trough and Death Valley, California Regions

This is an integrated and comparative study of two California rifts. The available data make a comparative and integrated analysis worthwhile. Receiver functions, controlled source seismic, gravity, and magnetic data has been used to constrain crustal structure.

Point(s) of Contact: 
Keyword(s): 
comparative study
geophysics
Research Effort: 

Picks from Potrillo region dataset for Hole's Code

This dataset corresponds to the picks made by Dr. Matt Averil using the controlled seismic experiment performed at the Potrillo region.

Point(s) of Contact: 
Keyword(s): 
hole's code
dataset
seismic tomography
Research Effort: 

Integrated and Comparative Geophysical Studies of Crustal Structure of Pull-apart Basins: The Salton Trough and Death Valley, California Regions

This is an integrated and comparative study of two California rifts. The available data make a comparative and integrated analysis worthwhile. For this work we have used receiver functions, controlled source seismic, gravity and magnetic data to constrain crustal structure. Analysis of gravity data shows that the anomalies in the Salton Trough are deeper than anomalies of Death Valley.

Author(s): 
Year: 
Jan 1 2009 (All day)
Type: 
technical report
Keyword(s): 
geophysics
gravity
crustal model
receiver
Research Effort: 
File(s): 

Calculation and interpretation of Receiver Functions

In this paper we discuss the importance of receiver functions and how they can be useful for determining Earth structure. Receiver functions are a representation of the Earth's response relative to a recording station. Earthquakes are considered teleseismic when a seismic event is 30 to 90 degrees away, which is a distance greater than 1,000 km from teh measurement site. Receiver functions are found to be useful when mapping the subsurface of the Earth by using teleseismic data in order to calculate Vp/Vs (k) (ratio of P-wave velocity to S-wave velocity) and crustal thickness.

Author(s): 
Year: 
Jan 1 2007 (All day)
Type: 
technical report
Keyword(s): 
receiver functions
geophysics
Research Effort: 
File(s): 

Basis for the calculations of travel time curves in a 1D model

In this report we provide some basis of refraction and reflection seismology, which are used to describe the earth structure based on velocity models, to help in the understanding of simple model of the earth structure. We provide an algorithm using refraction seismology, to identify the velocities and calculate the depths of a multilayer model of the earth, using travel times data collected by geophones (seismograms) from artificial sources.

Author(s): 
Year: 
Jan 1 2009 (All day)
Type: 
technical report
Keyword(s): 
seismic refraction
geophysics
computational mathematics
Research Effort: 

Magnetic Dataset for North America

A cooperative effort between Canada, the U.S. and Mexico has produced a very nice magnetic map and database for North America. The main goal of our effort is to simply make these data available in a more convenient form.

Keyword(s): 
geophysics
magnetic
dataset
Research Effort: 

Gravity Dataset for the United States Lower 48 states

The terrain corrected United States gravity database is available through the link below. The terrain corrections were calculated by Mike Webring of the U. S. Geological Survey using a digital elevation model and a technique based on the approach of Donald Plouff. The reduction of these data has been updated with modern geodetic datums and a higher precision digital elevation model. In the present version, latitude and longitude values are referenced to NAD83 (North American Datum 83; horizontal datum) and elevation values in meter are referenced to NGVD88 (Vertical datum).

Keyword(s): 
geophysics, gravity, dataset
gravity
dataset
Research Effort: