EC1, long and continuous mooring time series from 1996 to 2020

Date 2021
Temporal extent 1996-11 -2020-11
Author(s) Lee HojunORCID1, 3, Nam SunghyunORCID1, 2
Contributor(s) Noh Suyun, Kim Young-Il, Jang Youngsuk, Kim Yun-Bae, Chang Kyung-Il, Kim Kuh, Byun Sang-Kyung, Hwang Sang-Chul, Hogg Nelson, Worrilow Scott, Watts Randolph, Teague William
Affiliation(s) 1 : School of Earth and Environmental Sciences, Seoul National University, Seoul, Republic of Korea
2 : Research Institute of Oceanography, Seoul National University, Seoul, Republic of Korea
3 : Department of Oceanography, Republic of Korea Naval Academy, Changwon, Republic of Korea
DOI 10.17882/78916
Publisher SEANOE
Keyword(s) Long time-series, Continuous time-series, Subsurface mooring, East Sea (Japan Sea), Current measurement, Essential ocean variables, Ulleung Interplain Gap

The subsurface mooring, EC1, is located at a depth of 2,300 m in the middle of the Ulleung Interplain Gap (UIG) between Dokdo and Ulleung Island in the southwestern East Sea (Japan Sea). The mooring was initially deployed at EC1 in 1996 to quantify the temporal variability of deep flows, as the UIG is the only deep channel through which seawater below 1,500 m is exchanged between the Ulleung and Japan Basins. Since then, long and continuous time-series data have been collected at this mooring with a typical service period of one year to observe the temporal variability of essential ocean variables consistently. New sensors to measure water properties, as well as deep and shallow flows, have been inserted; these include Conductivity-Temperature-Depth and Dissolved Oxygen sensors. Previously published data from 1996 to 2017 were corrected to improve their quality and scientific applicability. Recently collected data from 2017 to 2020 were appended after quality control and assurance.

Licence CC-BY-NC
Acknowledgments We would like to thank Suyun Noh, Young-il Kim, Yun-Bae Kim, Kyung-Il Chang, Kuh Kim, Sang-Kyung Byun, Sang-Chul Hwang, Youngsuk Jang, Nelson Hogg, Scott Worrilow, Randolph Watts, and William Teague, who were involved in the initiation and past operations of EC1. The EC1 is now one of the registered and operational sites for OceanSITES ( Financial supports were originally provided by the Ministry of Oceans and Fisheries (MOF), Republic of Korea, via the EAST-I program. This work is currently part of the project titled “Deep Water Circulation and Material Cycling in the East Sea”, funded by the MOF, Republic of Korea.
Sensor metadata

SBE39 MicroCAT (Sea-Bird Scientific): temperature, pressure

SBE37SMP MicroCAT (Sea-Bird Scientific): temperature, conductivity, pressure

SBE37SMP-ODO MicroCAT (Sea-Bird Scientific): temperature, conductivity, pressure, dissolved oxygen

Aquadopp DW (Nortek): currents, temperature, pressure

RCM-7 (Aanderaa): currents, temperature, pressure

RCM-9 (Aanderaa): currents, temperature, pressure

RCM-11 (Aanderaa): currents, temperature, pressure, dissolved oxygen

WH 300 kHz sentinel-type ADCP (Teledyne RD Instruments): currents, temperature, pressure

File Size Format Processing Access
EC1 deployment (1996-2020) 115 MB NC, NetCDF Open access
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How to cite 

Lee Hojun, Nam Sunghyun (2021). EC1, long and continuous mooring time series from 1996 to 2020. SEANOE.