Ranking of major issuing institutions (TOP 10)
| Ranking | Frequency | Centrality | Institutions |
|---|---|---|---|
| 1 | 150 | 0.09 | Ocean University of China |
| 2 | 95 | 0.03 | Dalian Maritime University |
| 3 | 61 | 0.06 | Liaoning Normal University |
| 4 | 34 | 0.00 | Wuhan University |
| 5 | 25 | 0.03 | Nanjing University |
| 6 | 24 | 0.04 | Ningbo University |
| 7 | 22 | 0.01 | Shandong University |
| 8 | 20 | 0.02 | The First Institute of Oceanography, Ministry of Natural Resources |
| 9 | 20 | 0.00 | National Marine Environment Monitoring Center |
| 10 | 14 | 0.00 | Hainan University |
| Ranking | Frequency | Centrality | Institutions |
|---|---|---|---|
| 1 | 150 | 0.09 | Ocean University of China |
| 2 | 95 | 0.03 | Dalian Maritime University |
| 3 | 61 | 0.06 | Liaoning Normal University |
| 4 | 34 | 0.00 | Wuhan University |
| 5 | 25 | 0.03 | Nanjing University |
| 6 | 24 | 0.04 | Ningbo University |
| 7 | 22 | 0.01 | Shandong University |
| 8 | 20 | 0.02 | The First Institute of Oceanography, Ministry of Natural Resources |
| 9 | 20 | 0.00 | National Marine Environment Monitoring Center |
| 10 | 14 | 0.00 | Hainan University |
Source(s): Created by authors