| Term | Description |
| Gravity:Field | |
| Seismic:WideAngle | Wide source-receiver offset seismic data |
| PhysicalDescription | |
| Chemistry | data concerned with the composition, structure, and properties of matter, as well as the changes it undergoes during chemical reactions |
| ReflectorDepth:Moho | Seismically-derived depth to the Moho |
| Turbidity | An indication of the cloudiness of a fluid associated with suspended particles. Can be measured with a variety of sensors including transmissometers, nephelometers, or secchi disks. |
| Biology:StableIsotopes | |
| Interpretation:Geologic:SedimentaryEnvironments | |
| Backscatter:Acoustic | Acoustic backscatter intensity, the intensity of sound that is scattered back toward an acoustic transducer. |
| SubsidenceRate | |
| PhysicalProperties:Rock:Ancillary | Ancillary data, such as a calibration file, related to physical properties of rock. |
| Earthquake:Catalog:Microseismicity:FocalMechanisms | Earthquake focal mechanism solutions |
| Photograph | A still image acquired with a digital or film camera. |
| Geodesy:Velocity | GPS velocity derived from geodetic (GPS) measurements. |
| CrustalAge | Measurement of the amount of time the crustal rock material has been isolated from the convecting mantle. |
| Chemistry:RedoxPotential:ORP | ORP is relative redox (oxidation/reduction) potential measurement of chemical substance, solution, or natural system without calibration with respect to the Standard Hydrogen Electrode. The redox potential is an indication of the tendency of chemical species to acquire electrons and thereby be reduced. (Definition from Sharon Walker, PMEL, July 2024.) |
| Bathymetry | Seafloor depth data. |
| Hydroacoustic | Waveform data collected by sound-channel moored hydrophones typically used for monitoring undersea seismicity or marine mammal activity. |
| ThermalGradient | Temperature as a function of depth |
| Photograph:Video:TimeLapse | A video assembled from time-lapse images |
| LayerThickness:Crust | Crustal thickness, may be in depth or twtt. May be determined from seismic, radar, gravity etc. |
| Biology:GeneticSequence | A succession of letters representing the primary structure of a DNA molecule or strand. |
| Transmissivity | The fraction of incident light at a specified wavelength that passes through a sample |
| Chemistry:Fluid | data concerned with the composition, structure, and properties of fluids, as well as the changes it undergoes during chemical reactions |
| Earthquake:Catalog | An inventory of earthquake positions and magnitudes. |
| Elevation:Surface | |
| Meteorological | Measurement of data related to atmosphere that focuses on weather processes and forecasting. |
| BottomStress | Bottom stress refers to the shear stress experienced within the bottom boundary layer of a fluid and is a crucial component when understanding sediment transport. |
| Earthquake:Catalog:Microseismicity | An inventory of earthquake positions and magnitudes. |
| Bathymetry:Singlebeam | Bathymetry data derived from a single beam echosounder. |
| Seismic:Passive:Compliance | Measurements of the vertical displacement of the seafloor related to low frequency ocean waves (infragravity waves). |
| Backscatter:Optical | A measurement of the cloudiness of a medium derived from measuring the amount of light scattered by particles. |
| Interpretation:Geologic:Fault/Fissure | |
| Documentation | Use this data type for documentation that can be specifically tied to a data set, then map the two data sets. This data type will capture much of what we used to put in the entry_url table. |
| Elevation:Bedrock | |
| Temperature:Diffusivity | A measure of thermal diffusivity |
| PhysicalProperties:Sediment | A measure of the physical properties (eg density, porosity, magnetic susceptibility) of sediments, usually from a sediment core logger/scanner device. |
| Gravity:Anomaly:Bouguer | Simple (marine) Bouguer anomaly with no correction for modeled topography of a constant thickness, constant density crust. |
| Seismic:ReceiverFunction | Receiver function calculated from earthquake data |
| Chemistry:Sediment | Geochemistry data derived from sediment samples. |
| Magnetization | Quantity of magnetic moment per unit volume |
| WaveMeasurement | Measurements related to characteristics of waves such as wave height, period, direction. |
| Seismic:WideAngle:ESPs | Expanding Spread Profile seismic data collected during active (also known as controlled) source experiments involving two ships. |
| AcousticScintillationThermometry | A measurement of slight fluctuations in water temperature based on changes in the backscattered signal between successive sonar scans of an area of the seafloor. |
| Electromagnetic | Measurement of physical field produced by electrically charged objects. |
| Biology:Microbiology | Data about microorganisms, including eukaryotes (fungi and protists), and prokaryotes (bacteria and archaea). |
| Resistivity | A measure of how strongly a material opposes the flow of electric current. |
| Biology:Microbiology:Culture | A pure microbiological culture is produced by promoting mircroogranisms to reproduce in predetermined culture media under controlled laboratory conditions. |
| Sediment:Description | Can include grain size distribution data derived from sediment samples, classfication of sediments (sand, mud clay) and/or descriptions of environmental parameters relevant to ecological processes. |
| EnvironmentalDebris | Data quantifying anthropogenic environmental debris on the environment. |
| Chemistry:Fluid:Electrochemistry | data concerning chemical reactions which take place in a solution at the interface of an electron conductor (a metal or a semiconductor) and an ionic conductor (the electrolyte), and which involve electron transfer between the electrode and the electrolyte or species in solution. |
| Chemistry:Fluid:pH | A measure of the acidity of a fluid. |
| Seismic:Active:Subbottom | Data on reflectivity of sedimentary or rock layers beneath the seafloor collected with CHIRP and similar systems typically operating in the few Hz up to about 50 Hz range |
| Biology:Microbiology:Diversity | A measure of the variety of microorganisms at the genetic, species and ecosystem levels. |
| Radiation | The measurement of energy emitted by a body. |
| Seismic:Reflection:MCS | Data collected using the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves generated by multiple sound sources. |
| Gravity:Anomaly:MantleBouguerResidual | |
| Seismic:Navigation | Information about the position of the equipment during seismic data acquisition. This should include date, time, x and y. |
| Rugosity | Measurement of surface roughness (of a fluid) |
| Seismic:Passive:OBS | Data from Ocean Bottom Seismometers deployed to detect ground motions generated by natural seismic sources, eg earthquakes, volcanic eruptions. |
| Gravity:Anomaly:MantleBouguer | |
| Geodesy | Measurement of crustal deformation. |
| Photograph:WebGallery | A gallery of photographs that can be viewed and explored through an internet browser. |
| Interpretation:Geologic:LavaFlow | |
| Biology:Species:Abundance | A quantification of species abundance in a particular sample. |
| Chemistry:RedoxPotential:Eh | Eh is the redox (oxidation/reduction) --state-- of a chemical substance or solution that is calibrated and compared to the Standard Hydrogen Electrode. (Definition from Sharon Walker, PMEL, July 2024.) |
| Heatflow | Measurement of the transition of thermal energy from a hotter object to a cooler object |
| Fluorescence | Measurement of luminescence that is mostly found as an optical phenomenon in cold bodies, in which the molecular absorption of a photon triggers the emission of a photon with a longer (less energetic) wavelength, though a shorter wavelength emission is sometimes observed from multiple photon absorption. |
| TravelTime:Acoustic | Travel time for acoustic waves between, say, a modem and a logger such as those used in seafloor geodesy studies |
| IceConcentration | Area of a surface covered in ice. Often an image or diagram that shows sea ice over bodies of water. |
| Interpretation:Geologic:PlateBoundary | |
| SampleInfo:Rock | An inventory of rock samples physically acquired at a field site. |
| Seismic:Active:OBS:TravelTimePicks | Seismic wave travel time picks derived from active-source shooting to OBS instruments |
| Bathymetry:ReferenceSurface | A bathymetry grid produced over a flat area of seafloor that is used to test the performance of a multibeam sonar system. |
| LayerThickness:Ice | |
| Seismic:WideAngle:OBS | Wide source-receiver offset data collected during active (also known as controlled) source experiments using Ocean Bottom Seismometers as the receivers. |
| Tide:Height | |
| Density | The density, or more precisely, the volumetric mass density, of a substance is its mass per unit volume. |
| Magnetic:Anomaly | Measurement of the local variation in the Earth's magnetic field |
| Pressure | The force per unit area applied to the surface of an object. |
| Sidescan | Backscatter intensity data acquired with a sidescan sonar or similar data acquired with a multibeam sonar. |
| Observation:Bird | Field observations of birds noted during science operations. |
| Radar:Reflection | Electromagnetic waves scattered from any large change in the dielectric or diamagnetic constants. |
| SampleInfo:Sediment | An inventory of sediment samples physically acquired at a field site. |
| ReflectorDepth:Seafloor | Seismically-derived depth to the seafloor |
| Chemistry:Rock | Geochemistry data derived from rock samples. |
| Visualization:GoogleEarth | An assembly of information (e.g. images, lines, placemarks) written in KML/KMZ format for display in Google Earth. |
| RadiometricDating | Data describing the age of materials, usually based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates. |
| Photograph:Video:FrameGrab | Still images frame grabbed from video stream. |
| Permeability | |
| PhysicalProperties:Sediment:Ancillary | Ancillary data such as calibration files. |
| Visualization:Fledermaus | Fledermaus formatted visualization files (*.sd, *.scene) of surfaces and/or volumes that can be viewed with free software from IVS3D (www.ivs3d.com). |
| X-radiograph | Type of data used, for example, in analysis of sediment core stratigraphy. Produced by a specialised x-ray machine. |
| Seismic:Passive | Measurements of ground motions generated by natural seismic sources, eg earthquakes, volcanic eruptions |
| CurrentMeasurement | A measure of fluid velocity based on the path of a fluid parcel over time or in-situ measurements of fluid flow. |
| Magnetic:Anomaly:IGRF | Magnetic Anomaly with the International Geomagnetic Reference Field (IGRF), a standard mathematical description of the Earth's main magnetic field, removed |
| Seismic:Velocity:Model | Seismic velocity data obtained from a model. Model inputs generally include information on layer thickness, source-receiver geometry, weighting factor, etc. |
| Mineralogy:Sediment | Characterization of the mineral composition of sediments. |
| Gravity:Anomaly:FreeAir | measurement of the difference between observed gravity and theoretical gravity that has been computed for latitude and corrected for elevation of the station above or below the geoid, by application of the normal rate of change of gravity for change of elevation, as in free air. |
| Interpretation:Geologic | An interpretation of the characteristics of some component of the earth based on scientific assessment of one or more data types. |
| SampleInfo:Microbiology | An inventory of microbiological samples physically acquired at a field site. |
| Photograph:Video | Streaming images generated on film or digital media. |
| SampleInfo:Fluid | An inventory of fluid samples physically acquired at a field site. |
| Temperature | A measurement of how hot or cold a substance is. |
| Biology:Electrobiology | Data describing the electrical phenomena of living organisms. |
| ParticleFlux | A measure of the rate at which settling particles pass through a parcel of air or water. |
| Magnetotelluric | Measurement of the electric currents under the Earth's surface induced by natural variations in the earth's magnetic field. |
| Gravity:Predicted:PlateCooling | Predicted gravity contribution of plate cooling. |
| Bathymetry:Phase | Bathymetry data derived from the phase difference measured between two closely spaced receiving arrays. |
| ModelParameters | General data type for any files used to define the parameters of a model. Includes calibration, configuration, geometry, weighting information and so on. |
| FluidFlow | Measurement of fluids (liquids and gases) in motion. |
| Interpretation:Geologic:Map | |
| Radiation:Visible | The measurement of the electromagnetic spectrum that is visible to (can be detected by) the human eye. |
| Navigation | Information about the position of a platform or device. Minimally this includes x and y, but often date and time are also included. |
| Velocity:Particle | |
| Salinity | A measure of the dissolved salt content of a body of water. Often computed from Conductivity. |
| Bathymetry:Swath | Bathymetry data derived from a multibeam sonar. |
| SampleInfo:Biology | An inventory of biological samples physically acquired at a field site. |
| Flux:Air-Sea | Fluxes of momentum, sensible heat, and carbon dioxide over the ocean.
|
| LayerThickness:SeismicLayer2A | Seismic 2A layer thickness, in meters or two way travel time. |
| Radiation:Gamma | Measurement of radiation of photons with a frequency of greater than 1019 Hz. |
| SampleInfo | Metadata about physical samples that were acquired. |
| Navigation:Primary | Primary ship navigation data product |
| Bathymetry:Paleobathymetry | A reconstruction of a past bathymetric surface derived from sub-seafloor observations. |
| Seismic:WideAngle:OBH | Wide source-receiver offset data collected during active (also known as controlled) sorurce experiments using Ocean Bottom Hydrophones as the receivers. |
| Biology:Species:Distribution | Information about the observed spatial distribution of different species. |
| Pseudorange:GNSS | The apparent distance between a satellite and a navigation satellite receiver. |
| Radiation:Infrared | The measurement of electromagnetic radiation whose wavelength is longer than that of visible light (400-700 nm), but shorter than that of terahertz radiation (100 µm - 1 mm) and microwaves (~30,000 µm). Infrared radiation spans roughly three orders of magnitude (750 nm and 100 µm). |
| PhysicalProperties:Rock | A measure of the physical properties (e.g. permeability, porosity) of a rock sample. |
| Seismic:Reflection:SCS | Data collected using the principles of seismology to estimate the properties of the Earth's subsurface from reflected seismic waves generated by a single sound source. |
| Chemistry:Particulate | Chemistry data derived from particulate materials |
| Biology:Species:List | A list of organisms that were identified to species. |
| Photograph:Mosaic | An assemblage of images that have been rotated and scaled to create a composite view or image. |
| Conductivity:Thermal | A measure of the ability of a medium to conduct heat. |
| Turbulence | A measure of the chaotic, stochastic property changes of a fluid flow. |
| Biology:SymbiontPhysiology | Information about the function of the living systems of organisms that live within host organisms. |
| Visualization | A rendering of volumes, surfaces, illumination sources, etc, sometimes with a temporal component. |
| Conductivity | A measure of the ability of a medium to conduct electricity. |
| Velocity:Sound | The speed of sound. |
| Seismic:Passive:OBH | Data from Ocean Bottom Hydrophones deployed to detect water column motions generated by natural seismic sources, eg earthquakes, volcanic eruptions. |
| Magnetic:Field | The measurement of the Earth's total magnetic field. |
| Oxygen | A measurement of oxygen in a substance. May be dissolved oxygen, % oxygen saturation, etc. |
| Biology:LarvalFlux | Flux of larvae measured at a particular location |
| Bathymetry:BPI | Bathymetric Positioning Index (BPI) derived from ArcGIS Benthic Terrain Modeler(BTM). The BPI is a measure which allows calculating where a certain location with a defined elevation is relative to the overall landscape.
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| Biology:LarvalDistribution | Information about the larval population in an area. Could include spatial distribution information and/or species distribution. |
| Velocity:Doppler | A continuous-wave trajectory-measurement using the Doppler effect. |
