aircraft sound monitoring

AIRCRAFT SOUND MONITORING:

In compliance with the Fiscal Year 2020 National Defense Authorization Act (NDAA), the United States Department of the Navy (Navy) measured sound levels of jet aircraft at Naval Air Station (NAS) Whidbey Island and NAS Lemoore and compared the resulting measured data with modeled noise data.

This webpage provides more detailed information on the design of the study, results of the monitoring, and data collected and/or produced during the study.

Report to Congress

Department of the Navy Provides Aircraft Sound Monitoring Report to Congress

https://www.navy.mil/Press-Office/Press-Releases/display-pressreleases/Article/2877484/department-of-the-navy-provides-aircraft-sound-monitoring-report-to-congress/

Technical Report

The technical report provides additional details on the design of the monitoring study; a description of the data collection and analysis procedures; a detailed discussion on the comparison of the measured versus modeled results; and a summary of the conclusions of the study. The report also includes several appendices which provide more information on the basics of sound, the Department of Defense (DoD) aircraft noise models, and the DoD noise study procedures.

Technical Report - Real-time Aircraft Sound Monitoring_FINAL

I.  Aircraft Acoustic & Flight Operations Data

The data collected each period included: (1) acoustic recordings by sound level meters deployed at sites around each airfield to capture sound levels during a range of flight operations across a range of seasonal weather conditions; and (2) operations data, including logs of air traffic controllers and the monitoring teams, to document the flight activity scheduled and observed during each monitoring period. 

NAS Whidbey Island (NASWI) Acoustic Data

The NASWI acoustic data is organized in eleven separate zip files; one file for each airfield monitoring location. Each file contains data from all four monitoring periods.  The ‘READ ME’ file contains a description of the data and instructions on how to access the sound level meter software in order to read the data. 

PUBLIC_AcousticData_README  NASWI - SLM Serial Number Decoder Ring

NASWI_Site_2B_T.zip  NASWI_Site_3A_T A. zip NASWI Site 3A T B  NASWI_Site_5B_SG.zip  NASWI_Site_8B_SG.zip  NASWI_Site_9B_SG.zip  

NASWI_Site_20B_SG.zip  NASWI_Site_24A_B.zip NASWI_Site_25B_T.zip  NASWI_Site_26B_SG.zip

NASWI_Site_27A_SG.zip  NASWI_Site_33_SG.zip

The NASWI training airspace acoustic data is organized in zip files; each zip file contains data organized by the month of the year-long monitoring period at the sound level meter location in the Olympic National Park.

NASWI_Site_99_HOH_2021_01_A.zip  NASWI Site 99 HOH 2021 01_B.zip

NASWI_Site_99_HOH_2021_02.zip  NASWI_Site_99_HOH_2021_03_A.zip  NASWI Site 99 HOH 2021 03_B.zip  NASWI_Site_99_HOH_2021_04_A.zip  NASWI_Site_99_HOH_2021_04_B.zip

NASWI_Site_99_HOH_2021_05_A.zip  NASWI_Site_99_HOH_2021_05_B.zip  NASWI_Site_99_HOH_2021_06_A.zip  NASWI_Site_99_HOH_2021_06_B.zip  NASWI_Site_99_HOH_2021_07_A.zip  NASWI_Site_99_HOH_2021_07_B.zip

NASWI_Site_99_HOH_2021_08_A.zip  NASWI_Site_99_HOH_2021_08_B.zip  NASWI_Site_99_HOH_2021_09_A.zip  NASWI_Site_99_HOH_2021_09_B.zip  NASWI_Site_99_HOH_2020_11_A.zip  NASWI_Site_99_HOH_2020_11_B.zip

NASWI_Site_99_HOH_2020_12_A.zip  NASWI_Site_99_HOH_2020_12_B.zip  NASWI_Site_99_HOH_2020_10A  NASWI_Site_99_HOH_2020_10B 

NASWI_Site_99_HOH_2020_10C  NASWI_Site_99_HOH_2021_10A1  NASWI_Site_99_HOH_2021_10A2

NASWI_Site_99_HOH_2021_10B1  NASWI_Site_99_HOH_2021_10B2  NASWI_Site_99_HOH_2021_10C1

NASWI_Site_99_HOH_2021_10C2

NAS Whidbey Island (NASWI) Flight Operations Data

The NASWI Ault Field flight operations data is organized in pdf documents, one for each monitoring period; the training airspace flight activity is organized in one pdf document for the year-long monitoring period.  The ‘READ ME’ files contain a description of the data fields.

PUBLIC_NASWI_Operations_AultField_and_OlympicMOA

PUBLIC_NASWI_Operations_AultField_and_OlympicMOA_README

Outlying Land Field (OLF) Coupeville Flight Operations Data

OLF Coupeville flight operations data were collected by direct field observations. The attached zip file includes the daily flight activity during the monitoring study. 

PUBLIC_NASWI_Operations_OLFCoupeville

PUBLIC_NASWI_Operations_OLFCoupeville_README

NAS Lemoore (NASL) Acoustic Data        

The NASL acoustic data is organized in ten separate zip files; one file for each airfield monitoring location. Each file contains data from all four monitoring periods. The ‘READ ME’ file contains a description of the data and instructions on to access the sound level meter software in order to read the data. 

PUBLIC_AcousticData_README  NASL - SLM Serial Number Decoder Ring

NASL_Site_2_T.zip  NASL_Site_21_T.zip  NASL_Site_20_B.zip  NASL_Site_19_T_GC.zip  NASL_Site_9_T.zip  

NASL_Site_4_T.zip  NASL_Site_3_T.zip  NASL_Site_15_T.zip  NASL_Site_16_T_LF.zip  NASL_Site_6_T_N2.zip

NAS Lemoore (NASL) Flight Operations Data

The NASL flight operations data is organized in pdf documents; one for each monitoring period. The ‘READ ME’ file contains a description of the data fields.

PUBLIC_NASL_Operations  PUBLIC_NASL_Operations_README

II.  Acoustic Observation Data

The acoustic team used observer logs to document the observed details on the acoustic environment around the monitoring sites.  These logs were used to help identify non-aircraft sound sources and identify aircraft events recorded by the sound level meters each monitoring period. The data is presented in one zip file for each installation.  A ‘READ ME’ file contains a description of the data.

NAS Whidbey Island (NASWI) Acoustic Observer Logs

PUBLIC_NASWI_Observations  PUBLIC_Observations_NASWI_README

NAS Lemoore (NASL) Acoustic Observer Logs

PUBLIC_NASL_Observations  PUBLIC_NASL_Operations_README

III. Aircraft Noise Event Database

The aircraft noise event classification process created an event database. The database is a catalogue of all aircraft noise events, and associated acoustic metrics and flight operation for each event. The database was used to analyze and compare the measured sound level data to modeled data.  The noise event data is organized in zip files; one for each airfield. A ‘READ ME’ file contains a brief description of the data fields.

NASWI Noise Event Database

PUBLIC_NASWI_NoiseEvents  PUBLIC_NoiseEvents_NASWI_README

NASL Noise Event Database

PUBLIC_NASL_NoiseEvents  PUBLIC_NoiseEvents_NASL_README

IV.  Aircraft Noise Measured Results

The aircraft noise measure results are based on the identification process provided above. This database provides the direct calculation of the noise metrics, DNL and CNEL.  The noise measured results are organized in zip files; one for each airfield. A ‘READ ME’ file contains a brief description of the data fields.

NASWI Noise Measured Results

PUBLIC_NASWI_Results  PUBLIC_NASWI_Results_README

OLF_Coupeville_Daily_DNL_A1  OLF_Coupeville_Daily_DNL_A2  OLF_Coupeville_Daily_DNL_B1  

OLF_Coupeville_Daily_DNL_B2

NASL Noise Measured Results

PUBLIC_NASL_Results  PUBLIC_NASL_Results_README

V.  Noise Modeling Data

The noise modeling data is organized in one zip file. The zip file contains folders for NAS Whidbey Island (NASWI) and NAS Lemoore (NASL). The NASWI folder includes the NOISEMAP and MRNMAP input and outputs.  The NASL folder includes NOISEMAP inputs and outputs. A ‘READ ME’file contains a brief description of the noise modeling data.

PUBLIC_NOISEMAP  PUBLIC_NOISEMAP_Files_README

 

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