Philip J. Brown
A Geophysicist having over 30 years experience with geophysical operations, multidisciplinary geophysical data processing, joint earth-science data inversion and interpretation, software development and documentation, geodetic positioning, GIS, data base architecture, as well as engineering and repairing acquisition hardware.
- Geophysical and petrophysical technical expertise regarding ground-based, offshore, airborne, wire-line, and Measurement-While-Drilling (MWD) exploration tools utilizing multi-component (full tensor) -seismic, -potential-field, -electrical, and nuclear methods.
- Joint inversion and geologic interpretation of geophysical and petrophysical multi-dimensional data employing novel non-linear statistical methods and data-driven techniques.
- Interactive development environment (IDE) experience with Microsoft Visual Studio (VS), Eclipse, Jupyter, VS Code, and KDevelop.
- Data Base, GIS Development, and Content Management using C++, Visual Basic, JavaScript, Python, MySQL, phpMyAdmin, Joomla, WordPress, Drupal, ArcGIS Online, Oasis montaj, JSON, XML, HTML, CSS, Google Application Scripting (GAS), ScienceBase API, USGS Publications Warehouse API, USGS Metadata Wizard API, USGS Active Directory API, and Amazon Web Services (AWS).
- Earth Science related, object-oriented software development using GitHub, C++, Visual Basic, JavaScript, Python, Fortran, R, IDL, SQL, PHP, HTML, XML, CSS, DOS Script, LabView, MatLab, and Geosoft Oasis montaj GX/OMS.
- Light-Client and Web Development using HTML, PHP, JavaScript, CSS, XML, Joomla, WordPress, Drupal, USGS CMS, JSON, and Adobe Creative Design Suite.
- Computing platform application development for 32- and 64- bit MS Windows NT, 2000, 2002, XP, 7 and 10; Cygwin; Macintosh OS-X; Linux Gnome, K, and Ubuntu Desktops; Unix X-Windows; NEXT; DOS; VMS/VAX; as well as various proprietary and/or hand-held systems including real-time computing hardware used for data acquisition.
- Land Surveying, Down-Hole Directional Surveying, and Real-Time Kinematic (RTK) Differential Global Positioning Systems (GPS). Blue Marble type visualizations.
Science and Products
Filter Total Items: 34
Principal facts of regional gravity data in the Medicine Bow Mountains, Wyoming, 2022-2024 Principal facts of regional gravity data in the Medicine Bow Mountains, Wyoming, 2022-2024
Gravity data were collected in 2022-2024 to assist in mapping surface and subsurface geology in the Medicine Bow Mountains of southern Wyoming. This data release provides principal facts for 738 new gravity stations that were acquired to supplement existing public gravity data coverage.
Principal facts of regional gravity data in the central Upper Peninsula, Michigan, 2022-2023 Principal facts of regional gravity data in the central Upper Peninsula, Michigan, 2022-2023
Gravity data were collected in 2022 and 2023 to assist in mapping surface and subsurface geology in the central Upper Peninsula of Michigan. This data release provides principal facts for 666 new gravity stations that were acquired to supplement existing public gravity data coverage.
Density and magnetic susceptibility measurements on Precambrian rocks in the central Upper Peninsula, Michigan, 2021-2022 Density and magnetic susceptibility measurements on Precambrian rocks in the central Upper Peninsula, Michigan, 2021-2022
The U.S. Geological Survey (USGS) collected rock physical property measurements to help understand causative sources of gravity and magnetic survey anomalies in the central Upper Peninsula of Michigan. A total of 1,460 measurements of magnetic susceptibility and density from 61 outcrops and 37 boreholes have been conducted on Precambrian rocks. The measurements aid in interpretation of...
Magnetotelluric sounding data across the Idaho Batholith, Payette National Forest, Idaho, 1989 Magnetotelluric sounding data across the Idaho Batholith, Payette National Forest, Idaho, 1989
This dataset includes the magnetotelluric (MT) sounding data collected in 1989 across the Idaho Batholith, Payette National Forest, Idaho, by the U.S. Geological Survey (USGS). The primary focus is on geologic elements that relate to the Late Cretaceous Idaho batholith geometry and the development of the Yellow Pine mining district and Stibnite mining area. Twenty MT soundings along one...
Airborne magnetic and radiometric survey of the Wet Mountains and surrounding region, Custer and Fremont Counties, south-central Colorado, 2021 Airborne magnetic and radiometric survey of the Wet Mountains and surrounding region, Custer and Fremont Counties, south-central Colorado, 2021
This data release provides digital flight-line and gridded data for a high-resolution airborne magnetic and radiometric survey over the region surrounding the Wet Mountains of southern Colorado, including parts of Custer and Fremont Counties. Data for this survey were collected by Sander Geophysics Limited International (SGL) under contract with the USGS. The survey was flown in June and...
Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990 Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990
The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989...
Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008 Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008
This publication provides digital flight line data for a high-resolution magnetic survey over an area of the west-central Upper Peninsula of Michigan. The survey was flown in 2008 by Aeroquest under contract to Kennecott Eagle Minerals Company using a fixed-wing aircraft with a magnetometer mounted in a tail stinger. The USGS has obtained this 66,074 line km subset of the survey dataset...
Airborne magnetic survey over northeast North Dakota, 2000-2001 Airborne magnetic survey over northeast North Dakota, 2000-2001
This data release is a re-release of an airborne geophysical survey carried out for the United States Geological Survey (USGS) by Spectra Exploration Geoscience Corp., from November 2000 to February 2001. The purpose of this survey was to acquire high-resolution, high-sensitivity aeromagnetic data over an area in northeast and north-central North Dakota and assess the area for anomalies...
Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho
A mineral resource assessment was performed by the U.S. Geological Survey (USGS) to assess the potential of undiscovered skarn-hosted tungsten resources in the Northern Rocky Mountain region of eastern Idaho and western Montana. This region has seen moderate tungsten trioxide (WO3) production in the past from a variety of mineralization styles including skarn, vein and replacement, and...
Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021 Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021
The data release includes GIS data that map potential for tungsten skarn mineralization in permissive tracts in the Yukon-Tanana Uplands, Eastern Alaska, along with tables listing keywords and procedures used to produce the permissive tracts and score them for mineral potential.The GIS data are encapsulated in a file geodatabase called "AK_Wskarn_tract.gdb" and are also available in the...
Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019 Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019
This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2019 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 26 sites along five profiles ranging from 2 to...
Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019 Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019
This dataset includes magnetotelluric (MT) sounding data collected in July 2019 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and audiomagnetotellurics, the USGS collected MT data at 24 sites along five profiles ranging from 2 to 5
Filter Total Items: 21
Reducing tensor magnetic gradiometer data for unexploded ordnance detection Reducing tensor magnetic gradiometer data for unexploded ordnance detection
We performed a survey to demonstrate the effectiveness of a prototype tensor magnetic gradiometer system (TMGS) for detection of buried unexploded ordnance (UXO). In order to achieve a useful result, we designed a data-reduction procedure that resulted in a realistic magnetic gradient tensor and devised a simple way of viewing complicated tensor data, not only to assess the validity of...
Authors
Robert E. Bracken, Philip J. Brown
Aeromagnetic surveys in Yukon Flats Alaska, a website for the distribution of data Aeromagnetic surveys in Yukon Flats Alaska, a website for the distribution of data
No abstract available.
Authors
Philip J. Brown
Directional borehole radar tests of an oil injection experiment at the Colorado School of Mines, Golden, Colorado Directional borehole radar tests of an oil injection experiment at the Colorado School of Mines, Golden, Colorado
In October 2001, the U.S. Geological Survey conducted borehole radar surveys of an oil injection experiment at the Colorado School of Mines (CSM), in Golden Colorado using the prototype U.S. Geological Survey (USGS)-developed directional borehole radar system (DBOR). A explanation of the system can be found in Wright and others (2001). The USGS was invited to the CSM to deploy the...
Authors
Jared D. Abraham, Craig Moulton, Philip J. Brown
Advances in directional borehole radar data analysis and visualization Advances in directional borehole radar data analysis and visualization
The U.S. Geological Survey is developing a directional borehole radar (DBOR) tool for mapping fractures, lithologic changes, and underground utility and void detection. An important part of the development of the DBOR tool is data analysis and visualization, with the aim of making the software graphical user interface (GUI) intuitive and easy to use. The DBOR software system consists of...
Authors
D.V.G. Smith, P.J. Brown
Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia
The report describes the subsurface distribution of rocks of Cretaceous to Late Jurassic( ) age in the Atlantic Coastal Plain , South Carolina, and Georgia, and examines their potential for deep-well waste storage into th part of the regional sediment mass which lies below the deepest zones containing usable ground waters. For the study, usable ground water is considered to be that which...
Authors
Philip M. Brown, D.L. Brown, M.S. Reid, O. B. Lloyd
Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia
This report describes the subsurface distribution of rocks of Cretaceous to Late Jurassic(?) age in the Atlantic. Coastal Plain, South Carolina and Georgia, and examines their potential for deep-well waste storage. For mapping purposes a waste-storage "operational unit" is established and defined. It is a sand or sandstone layer, 20 feet or more in thickness, that is immediately overlain...
Authors
Philip M. Brown, D.L. Brown, M.S. Reid, O. B. Lloyd
Geologic evaluation of waste-storage potential in selected segments of the Mesozoic aquifer system below the zone of fresh water, Atlantic Coastal Plain, North Carolina through New Jersey Geologic evaluation of waste-storage potential in selected segments of the Mesozoic aquifer system below the zone of fresh water, Atlantic Coastal Plain, North Carolina through New Jersey
This report describes the distribution of subsurface environments in the Atlantic Coastal Plain?North Carolina through New Jersey, that are seen to have geologic potential for the storage of toxic waste. The environments described consist of layers of sand or sandstone, 20 feet or more in thickness, that are immediately overlain and underlain by layers of shale or clay, 20 feet or more...
Authors
Philip M. Brown, M.S. Reid
Lower Cretaceous, Jurassic(?), and Triassic Ostracoda from the Atlantic coastal region Lower Cretaceous, Jurassic(?), and Triassic Ostracoda from the Atlantic coastal region
No abstract available.
Authors
Frederick Morrill Swain, Philip Monroe Brown
Structural and stratigraphic framework, and spatial distribution of permeability of the Atlantic Coastal Plain, North Carolina to New York Structural and stratigraphic framework, and spatial distribution of permeability of the Atlantic Coastal Plain, North Carolina to New York
This report describes and interprets the results of a detailed subsurface mapping program undertaken in that part of the Atlantic Coastal Plain which extends from the South Carolina and North Carolina border through Long Island, N.Y. Data obtained from more than 2,200 wells are analyzed. Seventeen chronostratigraphic units are mapped in the subsurface. They range in age from Jurassic(?)...
Authors
Philip Monroe Brown, James A. Miller, Frederick Morrill Swain
Science and Products
Filter Total Items: 34
Principal facts of regional gravity data in the Medicine Bow Mountains, Wyoming, 2022-2024 Principal facts of regional gravity data in the Medicine Bow Mountains, Wyoming, 2022-2024
Gravity data were collected in 2022-2024 to assist in mapping surface and subsurface geology in the Medicine Bow Mountains of southern Wyoming. This data release provides principal facts for 738 new gravity stations that were acquired to supplement existing public gravity data coverage.
Principal facts of regional gravity data in the central Upper Peninsula, Michigan, 2022-2023 Principal facts of regional gravity data in the central Upper Peninsula, Michigan, 2022-2023
Gravity data were collected in 2022 and 2023 to assist in mapping surface and subsurface geology in the central Upper Peninsula of Michigan. This data release provides principal facts for 666 new gravity stations that were acquired to supplement existing public gravity data coverage.
Density and magnetic susceptibility measurements on Precambrian rocks in the central Upper Peninsula, Michigan, 2021-2022 Density and magnetic susceptibility measurements on Precambrian rocks in the central Upper Peninsula, Michigan, 2021-2022
The U.S. Geological Survey (USGS) collected rock physical property measurements to help understand causative sources of gravity and magnetic survey anomalies in the central Upper Peninsula of Michigan. A total of 1,460 measurements of magnetic susceptibility and density from 61 outcrops and 37 boreholes have been conducted on Precambrian rocks. The measurements aid in interpretation of...
Magnetotelluric sounding data across the Idaho Batholith, Payette National Forest, Idaho, 1989 Magnetotelluric sounding data across the Idaho Batholith, Payette National Forest, Idaho, 1989
This dataset includes the magnetotelluric (MT) sounding data collected in 1989 across the Idaho Batholith, Payette National Forest, Idaho, by the U.S. Geological Survey (USGS). The primary focus is on geologic elements that relate to the Late Cretaceous Idaho batholith geometry and the development of the Yellow Pine mining district and Stibnite mining area. Twenty MT soundings along one...
Airborne magnetic and radiometric survey of the Wet Mountains and surrounding region, Custer and Fremont Counties, south-central Colorado, 2021 Airborne magnetic and radiometric survey of the Wet Mountains and surrounding region, Custer and Fremont Counties, south-central Colorado, 2021
This data release provides digital flight-line and gridded data for a high-resolution airborne magnetic and radiometric survey over the region surrounding the Wet Mountains of southern Colorado, including parts of Custer and Fremont Counties. Data for this survey were collected by Sander Geophysics Limited International (SGL) under contract with the USGS. The survey was flown in June and...
Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990 Magnetotelluric Data from the San Andreas Fault, Loma Prieta CA, 1989-1990
The U.S. Geological Survey (USGS) Geology, Geophysics and Geochemistry Science Center (GGGSC) collaborated with the USGS Science Analytics and Synthesis (SAS) team to preserve and release a subset of magnetotelluric data from the San Andreas Fault in Loma Prieta, California. The San Andreas Fault data were collected by the Branch of Geophysics, a precursor to the now GGGSC, between 1989...
Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008 Airborne Magnetic Survey, Michigan Upper Peninsula Area, 2008
This publication provides digital flight line data for a high-resolution magnetic survey over an area of the west-central Upper Peninsula of Michigan. The survey was flown in 2008 by Aeroquest under contract to Kennecott Eagle Minerals Company using a fixed-wing aircraft with a magnetometer mounted in a tail stinger. The USGS has obtained this 66,074 line km subset of the survey dataset...
Airborne magnetic survey over northeast North Dakota, 2000-2001 Airborne magnetic survey over northeast North Dakota, 2000-2001
This data release is a re-release of an airborne geophysical survey carried out for the United States Geological Survey (USGS) by Spectra Exploration Geoscience Corp., from November 2000 to February 2001. The purpose of this survey was to acquire high-resolution, high-sensitivity aeromagnetic data over an area in northeast and north-central North Dakota and assess the area for anomalies...
Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho Spatial data associated with tungsten skarn resource assessment of the Northern Rocky Mountains, Montana and Idaho
A mineral resource assessment was performed by the U.S. Geological Survey (USGS) to assess the potential of undiscovered skarn-hosted tungsten resources in the Northern Rocky Mountain region of eastern Idaho and western Montana. This region has seen moderate tungsten trioxide (WO3) production in the past from a variety of mineralization styles including skarn, vein and replacement, and...
Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021 Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021
The data release includes GIS data that map potential for tungsten skarn mineralization in permissive tracts in the Yukon-Tanana Uplands, Eastern Alaska, along with tables listing keywords and procedures used to produce the permissive tracts and score them for mineral potential.The GIS data are encapsulated in a file geodatabase called "AK_Wskarn_tract.gdb" and are also available in the...
Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019 Audiomagnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019
This dataset includes audiomagnetotelluric (AMT) sounding data collected in July 2019 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and magnetotellurics, the USGS collected AMT data at 26 sites along five profiles ranging from 2 to...
Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019 Magnetotelluric sounding data in the Silverton Caldera complex, Colorado, 2019
This dataset includes magnetotelluric (MT) sounding data collected in July 2019 in the Silverton Caldera complex, Colorado, in the Southern Rocky Mountain Volcanic Field, by the U.S. Geological Survey (USGS). Along with geologic mapping, airborne magnetics, airborne electromagnetics, and audiomagnetotellurics, the USGS collected MT data at 24 sites along five profiles ranging from 2 to 5
Filter Total Items: 21
Reducing tensor magnetic gradiometer data for unexploded ordnance detection Reducing tensor magnetic gradiometer data for unexploded ordnance detection
We performed a survey to demonstrate the effectiveness of a prototype tensor magnetic gradiometer system (TMGS) for detection of buried unexploded ordnance (UXO). In order to achieve a useful result, we designed a data-reduction procedure that resulted in a realistic magnetic gradient tensor and devised a simple way of viewing complicated tensor data, not only to assess the validity of...
Authors
Robert E. Bracken, Philip J. Brown
Aeromagnetic surveys in Yukon Flats Alaska, a website for the distribution of data Aeromagnetic surveys in Yukon Flats Alaska, a website for the distribution of data
No abstract available.
Authors
Philip J. Brown
Directional borehole radar tests of an oil injection experiment at the Colorado School of Mines, Golden, Colorado Directional borehole radar tests of an oil injection experiment at the Colorado School of Mines, Golden, Colorado
In October 2001, the U.S. Geological Survey conducted borehole radar surveys of an oil injection experiment at the Colorado School of Mines (CSM), in Golden Colorado using the prototype U.S. Geological Survey (USGS)-developed directional borehole radar system (DBOR). A explanation of the system can be found in Wright and others (2001). The USGS was invited to the CSM to deploy the...
Authors
Jared D. Abraham, Craig Moulton, Philip J. Brown
Advances in directional borehole radar data analysis and visualization Advances in directional borehole radar data analysis and visualization
The U.S. Geological Survey is developing a directional borehole radar (DBOR) tool for mapping fractures, lithologic changes, and underground utility and void detection. An important part of the development of the DBOR tool is data analysis and visualization, with the aim of making the software graphical user interface (GUI) intuitive and easy to use. The DBOR software system consists of...
Authors
D.V.G. Smith, P.J. Brown
Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia
The report describes the subsurface distribution of rocks of Cretaceous to Late Jurassic( ) age in the Atlantic Coastal Plain , South Carolina, and Georgia, and examines their potential for deep-well waste storage into th part of the regional sediment mass which lies below the deepest zones containing usable ground waters. For the study, usable ground water is considered to be that which...
Authors
Philip M. Brown, D.L. Brown, M.S. Reid, O. B. Lloyd
Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia Evaluation of the geologic and hydrologic factors related to the waste-storage potential of Mesozoic aquifers in the southern part of the Atlantic Coastal Plain, South Carolina and Georgia
This report describes the subsurface distribution of rocks of Cretaceous to Late Jurassic(?) age in the Atlantic. Coastal Plain, South Carolina and Georgia, and examines their potential for deep-well waste storage. For mapping purposes a waste-storage "operational unit" is established and defined. It is a sand or sandstone layer, 20 feet or more in thickness, that is immediately overlain...
Authors
Philip M. Brown, D.L. Brown, M.S. Reid, O. B. Lloyd
Geologic evaluation of waste-storage potential in selected segments of the Mesozoic aquifer system below the zone of fresh water, Atlantic Coastal Plain, North Carolina through New Jersey Geologic evaluation of waste-storage potential in selected segments of the Mesozoic aquifer system below the zone of fresh water, Atlantic Coastal Plain, North Carolina through New Jersey
This report describes the distribution of subsurface environments in the Atlantic Coastal Plain?North Carolina through New Jersey, that are seen to have geologic potential for the storage of toxic waste. The environments described consist of layers of sand or sandstone, 20 feet or more in thickness, that are immediately overlain and underlain by layers of shale or clay, 20 feet or more...
Authors
Philip M. Brown, M.S. Reid
Lower Cretaceous, Jurassic(?), and Triassic Ostracoda from the Atlantic coastal region Lower Cretaceous, Jurassic(?), and Triassic Ostracoda from the Atlantic coastal region
No abstract available.
Authors
Frederick Morrill Swain, Philip Monroe Brown
Structural and stratigraphic framework, and spatial distribution of permeability of the Atlantic Coastal Plain, North Carolina to New York Structural and stratigraphic framework, and spatial distribution of permeability of the Atlantic Coastal Plain, North Carolina to New York
This report describes and interprets the results of a detailed subsurface mapping program undertaken in that part of the Atlantic Coastal Plain which extends from the South Carolina and North Carolina border through Long Island, N.Y. Data obtained from more than 2,200 wells are analyzed. Seventeen chronostratigraphic units are mapped in the subsurface. They range in age from Jurassic(?)...
Authors
Philip Monroe Brown, James A. Miller, Frederick Morrill Swain