인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
Recently, δ<sup>17</sup>O and its excess (Δ'<sup>17</sup>O) have become increasingly significant "triple-oxygen-isotope" indicators of distinctive hydrological processes in hydrology and climatology. This situation mirrors the research regarding δ<sup>18</sup>O and δ<sup>2</sup>H in the 1960s towards a solid theoretical base and a surge in application examples and field studies worldwide. Currently, systematic global measurements for δ<sup>17</sup>O in precipitation are still lacking. As a result, attempts have been made to define a Global δ<sup>17</sup>O/δ<sup>18</sup>O Meteoric Water Line (GMWL), often by using regional or local datasets of varying systematicity. Different definitions of the global reference slope (λ<sub>ref</sub>) for determining Δ'<sup>17</sup>O values have been proposed, by ongoing debate around a proposed consensus value of 0.528. This study used worldwide samples archived in the IAEA Global Network of Isotopes in Precipitation (GNIP) to (a) derive a δ<sup>17</sup>O/δ<sup>18</sup>O GMWL based on four-year monthly records from 66 GNIP stations, (b) formulate local δ<sup>17</sup>O/δ<sup>18</sup>O meteoric water lines (LMWL) for these stations' areas, and (c) evaluate regional and seasonal variations of Δ'<sup>17</sup>O in precipitation. The GMWL for δ<sup>17</sup>O/δ<sup>18</sup>O was determined to be δ'<sup>17</sup>O = 0.5280 ± 0.0002 δ'<sup>18</sup>O + 0.0153 ± 0.0013, in keeping with the consensus value. Furthermore, our results suggested that using a line-conditioned <sup>17</sup>O-excess is a viable alternative over the global λ<sub>ref</sub> in the context of regional hydrology and paleoclimatology interpretations; however, without challenging the global λ<sub>ref</sub> as such.
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.