heavy spar - honeycombed ice
- high-head
- high-impedance bed
- high-impedance contrast
- high-impedance layer
- high-intensity magnetic separation
- high-level beach
- high-level clouds
- high-moor peat
- high-noise area
- high-order plate
- high-oscillating
- high-output
- high-permeability
- high-permeability formation
- high-power field
- high-precision equipment
- high-precision instrument
- high-precision magnetometer
- high-precision survey
- high-pressure
- high-pressure charge
- high-pressure environment
- high-pressure water-assisted cutting
- high-pressure waterjet-assisted cutting
- high-purity limestone
- high-relief
- high-relief terrain
- high-resistivity
- high-resistivity basement
- high-resistivity bed
- high-resistivity feature
- high-resistivity formation
- high-resistivity layer
- high-resistivity material
- high-resistivity medium
- high-resistivity rock
- high-resistivity zone
- high-resolution cable
- high-resolution data
- high-resolution data set