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givenName: Karl | givenName: Karl | ||
mainEntityOfPage: https://orcid.org/0000-0003-3075-4703 | mainEntityOfPage: https://orcid.org/0000-0003-3075-4703 | ||
OpenAlex: | |||
created_date: '2023-07-21' | |||
display_name: Karl J. Ellefsen | |||
display_name_alternatives: | |||
- Karl Ellefsen | |||
- K. J. Ellefsen | |||
- Karl J. Ellefsen | |||
ids: | |||
openalex: https://openalex.org/A5031333239 | |||
orcid: https://orcid.org/0000-0003-3075-4703 | |||
last_known_institutions: | |||
- country_code: US | |||
display_name: United States Geological Survey | |||
id: https://openalex.org/I1286329397 | |||
lineage: | |||
- https://openalex.org/I1286329397 | |||
- https://openalex.org/I1335927249 | |||
ror: https://ror.org/035a68863 | |||
type: government | |||
orcid: https://orcid.org/0000-0003-3075-4703 | |||
topics: | |||
- count: 46 | |||
display_name: Applications of Ground-Penetrating Radar in Geoscience and Engineering | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Engineering | |||
id: https://openalex.org/fields/22 | |||
id: https://openalex.org/T11609 | |||
subfield: | |||
display_name: Ocean Engineering | |||
id: https://openalex.org/subfields/2212 | |||
- count: 35 | |||
display_name: Seismic Waveform Inversion in Geophysics | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
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id: https://openalex.org/T10271 | |||
subfield: | |||
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id: https://openalex.org/subfields/1908 | |||
- count: 33 | |||
display_name: High-Resolution Seismic Noise Tomography | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
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id: https://openalex.org/T11757 | |||
subfield: | |||
display_name: Geophysics | |||
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- count: 23 | |||
display_name: Machine Learning for Mineral Prospectivity Mapping | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Computer Science | |||
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subfield: | |||
display_name: Artificial Intelligence | |||
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- count: 15 | |||
display_name: Geophysical Exploration and Monitoring Techniques | |||
domain: | |||
display_name: Physical Sciences | |||
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field: | |||
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subfield: | |||
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- count: 12 | |||
display_name: Digital Soil Mapping Techniques | |||
domain: | |||
display_name: Physical Sciences | |||
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field: | |||
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subfield: | |||
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- count: 9 | |||
display_name: Drilling Fluid Technology and Well Integrity | |||
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display_name: Physical Sciences | |||
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field: | |||
display_name: Engineering | |||
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subfield: | |||
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- count: 5 | |||
display_name: Microwave Imaging for Breast Cancer Detection | |||
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id: https://openalex.org/domains/3 | |||
field: | |||
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subfield: | |||
display_name: Biomedical Engineering | |||
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display_name: Multiscale Seafloor Mapping and Classification Techniques | |||
domain: | |||
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field: | |||
display_name: Earth and Planetary Sciences | |||
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subfield: | |||
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display_name: Geological Modeling and Uncertainty Analysis | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
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id: https://openalex.org/T13067 | |||
subfield: | |||
display_name: Geochemistry and Petrology | |||
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- count: 4 | |||
display_name: Applications of Clay Nanotubes in Various Fields | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Materials Science | |||
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id: https://openalex.org/T11852 | |||
subfield: | |||
display_name: Biomaterials | |||
id: https://openalex.org/subfields/2502 | |||
- count: 3 | |||
display_name: Non-Destructive Techniques Based on Eddy Current Testing | |||
domain: | |||
display_name: Physical Sciences | |||
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field: | |||
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subfield: | |||
display_name: Mechanical Engineering | |||
id: https://openalex.org/subfields/2210 | |||
- count: 3 | |||
display_name: Geochemistry of Manganese Oxides in Sedimentary Environments | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Earth and Planetary Sciences | |||
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id: https://openalex.org/T11740 | |||
subfield: | |||
display_name: Geochemistry and Petrology | |||
id: https://openalex.org/subfields/1906 | |||
- count: 3 | |||
display_name: Comminution in Mineral Processing | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Engineering | |||
id: https://openalex.org/fields/22 | |||
id: https://openalex.org/T12282 | |||
subfield: | |||
display_name: Mechanical Engineering | |||
id: https://openalex.org/subfields/2210 | |||
- count: 3 | |||
display_name: Machine Learning for Earthquake Early Warning Systems | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Computer Science | |||
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id: https://openalex.org/T13018 | |||
subfield: | |||
display_name: Artificial Intelligence | |||
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- count: 3 | |||
display_name: Rock Mechanics and Wave Propagation in Geomedia | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Engineering | |||
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id: https://openalex.org/T13619 | |||
subfield: | |||
display_name: Mechanics of Materials | |||
id: https://openalex.org/subfields/2211 | |||
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display_name: Environmental Impact of Heavy Metal Contamination | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T10139 | |||
subfield: | |||
display_name: Pollution | |||
id: https://openalex.org/subfields/2310 | |||
- count: 3 | |||
display_name: Chemistry of Actinide and Lanthanide Elements | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Chemistry | |||
id: https://openalex.org/fields/16 | |||
id: https://openalex.org/T10973 | |||
subfield: | |||
display_name: Inorganic Chemistry | |||
id: https://openalex.org/subfields/1604 | |||
- count: 3 | |||
display_name: Model-Based Clustering with Mixture Models | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Computer Science | |||
id: https://openalex.org/fields/17 | |||
id: https://openalex.org/T11901 | |||
subfield: | |||
display_name: Artificial Intelligence | |||
id: https://openalex.org/subfields/1702 | |||
- count: 3 | |||
display_name: Application of Stable Isotopes in Trophic Ecology | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
id: https://openalex.org/fields/23 | |||
id: https://openalex.org/T12073 | |||
subfield: | |||
display_name: Ecology | |||
id: https://openalex.org/subfields/2303 | |||
- count: 2 | |||
display_name: Finite-Difference Time-Domain Methods in Electromagnetics | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
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id: https://openalex.org/T11263 | |||
subfield: | |||
display_name: Electrical and Electronic Engineering | |||
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display_name: Anaerobic Methane Oxidation and Gas Hydrates | |||
domain: | |||
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id: https://openalex.org/domains/3 | |||
field: | |||
display_name: Environmental Science | |||
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id: https://openalex.org/T10995 | |||
subfield: | |||
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id: https://openalex.org/subfields/2304 | |||
- count: 2 | |||
display_name: Groundwater Flow and Transport Modeling | |||
domain: | |||
display_name: Physical Sciences | |||
id: https://openalex.org/domains/3 | |||
field: | |||
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subfield: | |||
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display_name: Hydraulic Fracturing in Shale Gas Reservoirs | |||
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field: | |||
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subfield: | |||
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display_name: Water Quality and Hydrogeology Research | |||
domain: | |||
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field: | |||
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id: https://openalex.org/T12773 | |||
subfield: | |||
display_name: Water Science and Technology | |||
id: https://openalex.org/subfields/2312 | |||
updated_date: '2024-05-19T05:59:06.490444' | |||
USGS Staff Profile: | USGS Staff Profile: | ||
'@context': https://schema.org | '@context': https://schema.org |