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The Dataset of UAV Based High-resolution Tidal Topography at the Nakdong Estuary: Focusing on Jin-u Island and Shin-ja Island: Yeongjae Jang, Jingyo Lee, Joo-Hyung Ryu, Kye-Lim Kim, Hahn Chul Jung, Keunyong Kim; GEO DATA. 2022;4(1):27-36. Published online March 31, 2022; DOI: https://doi.org/10.22761/DJ2022.4.1.003

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In the tidal flats of the Nakdong Estuary, eight weirs were installed as part of the Four Major River Restoration Project in 2011, and the environment changed from a flowing stream to a still water stream. As the Nakdong River’s weir was permanently opened in February 2022, the topography and ecological environment are expected to large change. In this study, Unmanned Aerial Vehicle (UAV) photogrammetry was conducted on the tidal flats of the Nakdong Estuary in November 2021, the environment before the Nakdong River floodgates were opened. The study area was surveyed using the Network-RTK (Real-Time Kinematic) method to obtain Ground Control Point (GCP), and using an UAV, orthographic image and digital elevation model were generated for an area of 3.47 ㎢ near Jin-u island and 2.75 ㎢ near Shin-ja island. A result of spatial resolution of 1.8 cm was obtained, the result was verified using checkpoints, and results with accuracy exceeding 1 cm were obtained in both Sin-u Island and Jin-woo Island. In the future, changes in the topography and sedimentation environment of this area are expected, so it will be useful data for various research and conservation management.

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Influence of Precipitation Conditions and Discharge Rates of River Estuary Barrages on Geomorphological Changes in an Estuarine Area
Sung-Bo Kim, Doo-Pyo Kim
Applied Sciences.2023; 13(17): 9661. CrossRef

Construction of Topographic/Hydrologic Data using DEM and Its Service: Saro Lee, Minji Kim; GEO DATA. 2020;2(2):36-44. Published online December 30, 2020; DOI: https://doi.org/10.22761/DJ2020.2.2.006

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In this study, 10 types of terrain analysis maps and 10 types of hydrology analysis maps were constructed through various topographic/hydrological analysis using a digital topographic model (DEM). The construction range is for the entire South Korea, the resolution is 30m, and the coordinate system is UTM-K coordinates. The constructed data format is provided in three formats: ASCII, ARCGIS GRID, and GEOTIFF. In addition, all data is provided in the form of the above three data format for whole of South Korea and each administrative district. All of these topographic/hydrological analysis data can be downloaded for free from the environment big data platform (www.bigdata-environment.kr).

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Predictors of Unilateral Arm Lymphedema in Non-obese Locoregionally Advanced Breast Cancer Patients Undergoing Neoadjuvant Chemotherapy, Modified Radical Mastectomy, and Postoperative Irradiation
Surjeet Dwivedi, Amiy Arnav, Varun Kumar Agarwal, S K Deshpande, Rohit Sharma, Naresh Saidha
European Journal of Breast Health.2024; 20(2): 149. CrossRef
Need for Staging Investigations in Newly Diagnosed Breast Cancer: Establishing Local Guidelines for Radiological Staging in Bahrain
Ahmed Adel Alkazaz, Noora Fuad Ali, Ahmed Zuhair Salman, Sayed Ali Almahari, Tareq Hamed Altaei, Wegdan Zaki Albati, Hisham Mustafa Habib, Aysha Adnan Alsadoon, Noor Ali Almawlani, Fatema Ali Alkhabbaz, Raja Eid, Hussain Adnan Abdulla
European Journal of Breast Health.2024; 20(2): 136. CrossRef
Construction of Topographic/Hydrologic Data using DEM and its Service 2
Saro Lee, Minju Kim
GEO DATA.2021; 3(4): 1. CrossRef

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