Measurement of the waveform parameters of shallow explosive charges

Pay-walled Peer Reviewed Publication 1985

Journal of the Acoustical Society of America

Measurements of the properties of shallow underwater explosions have been obtained in recent experiments with 0.82-kg SUS (signal underwater sound) charges at depths from 23.5 to 194.5 m. The data were recorded in the farfield with a high-resolution digital recording system to ensure good reproduction of both the high- and low-frequency components of the waveform. The measurements provide new results for the pressures, impulses, durations, and time constants of the shock wave and the first bubble pulse, and in addition, extend the available information to include the properties of the subsequent bubble pulses and the negative phases. Comparison of the data with previously published semiempirical relationships based on experiments with deeper charges indicates that those expressions generally do not provide adequate descriptions of the shallow charge data. In particular, there is significant disagreement with the measurements of the shock wave decay constant, and with the measurements of all of the bubble phase properties. The effect of vertical migration is appreciable for shallow charges and was observed in the measurements of bubble pulse periods, pressures, and impulses. Semiempirical relationships were derived from the data for the properties of both the shock wave and the bubble pulse series. These expressions account for the depth dependence due to migration observed in the bubble phase properties and consequently provide parameter values appropriate for modeling the pressure waveform of shallow charges.

Link To Publication

Similar Research

Responses of Bottlenose Dolphins to Construction and Demolition of Underwater Structures

Open Access Report 2006

Mote Marine Laboratory

Of all of the anthropogenic noise sources in the marine environment, construction and demolition noise and their effects have received perhaps the least attention, and yet...
Read More

A Summary of Existing and Future Potential Treatments for Reducing Underwater Sounds from Oil and Gas Industry Activities

Pay-walled Conference 2007

OCEANS 2007

This paper summarizes the efforts undertaken by the author to identify existing and future potential methods to reduce underwater sound levels created by nearly all oil...
Read More

Likely sensitivity of bottlenose dolphins to pile-driving noise

Pay-walled Journal Article 2006

Water and Environment Journal

Pile driver-generated noise has the potential to affect dolphin populations adversely as it is detectable up to 40 km from the source. At 9 kHz, this...
Read More

Tolerance by ringed seals (Phoca hispida) to impact pipe-driving and construction sounds at an oil production island

Pay-walled Journal Article 2004

The Journal of the Acoustical Society of America

During June and July 2000, impact pipe-driving sounds at Northstar Island (Prudhoe Bay, Alaska) were recorded underwater and in air at distances 63–3000 m from the...
Read More

Effects of underwater noise on auditory sensitivity of a cyprinid fish

Pay-walled Journal Article 2001

Hearing Research

The ability of a fish to interpret acoustic information in its environment is crucial for its survival. Thus, it is important to understand how underwater noise...
Read More

Criteria and Thresholds of U.S. Navy Acoustic and Explosive Effects Analysis.

Open Access Report 2012

Space and Naval Warfare Systems Command Systems Centre Pacific

Sounds produced from naval activities can be divided into seven categories: (1) Sonars and other active acoustic sources; (2) Explosive detonations; (3) Ship noise; (4) Aircrafts...
Read More

Seal monitoring and evaluation for the Gemini offshore windpark: T-construction

Open Access Report 2016

T-construction

1. Gemini offshore windfarm is located 55 km north of the island of Schiermonnikoog. The construction works for the 150 wind turbines and electrical infrastructure were...
Read More

Ambient Underwater Noise Levels at Norra Midsjöbanken during Construction of the Nord Stream Pipeline.

Open Access Journal Article 2012

Nord Stream

Norra Midsjöbanken is a Natura 2000 area situated approximately 50 km east of the southern tip of Öland island in the Swedish Exclusive Economic Zone (EEZ)....
Read More

Pressure pulse characteristics of deep explosions as functions of depth and range.

Open Access Report 1967

Naval Ordnance Laboratory

Thirty-eight TNT ant 18 HBX-3 charges weighing one, eight, and fifty pounds were fired at depths betweeen 500 and 14,000 ft; pressure-time data were measured directly...
Read More
Keywords: Depth, Explosion, Pressure

Agreement in Principal for Interim Criteria for Injury to Fish from Pile Driving Activities.

Open Access Meeting documents, Notices 2008

National Oceanic and Atmospheric Administration

A letter to discuss the agreement of interim criteria for injury to fish from pile driving activities....
Read More
Keywords: Fish, Injury, Pile driving