[vc_empty_space][vc_empty_space]
Environmental parameters controlling stalagmite growth in tropical areas: New insights from cave monitoring at petruk cave, central Java, Indonesia
Hasegawa W.a, Watanabe Y.a, Matsuoka H.a, Ohsawa S.a, Brahmantyo B.b, Maryunani K.A.b, Tagami T.a
a Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University, Kyoto, 606-8502, Japan
b Faculty of Earth Sciences and Mineral Technology, Institut Teknologi Bandung, Bandung, 40132, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2018, National Speleological Society Inc. All rights reserved.To elucidate environmental parameters controlling stalagmite growth in tropical areas, we conducted cave monitoring throughout a year in Petruk Cave, central Java, Indonesia. We compared stalagmite growth rate with the cave’s environmental parameters, air temperature, drip rate, calcium concentration of the drip waters, and pCO2-air. We found a relationship where stalagmite growth rate is fast (slow) when pCO2-air is low (high) during dry (rainy) season, suggesting that pCO2-air controls stalagmite growth. Note that this is a first study that reports that dramatic pCO2-air reduction occurring during dry season in a tropical cave controls stalagmite growth. Additionally, we discuss the mechanism of pCO2-air fluctuation. Monitoring results show that pCO2-air fluctuation is divided into two phenomena, seasonal fluctuations and daily fluctuations. Dramatic pCO2-air reduction during the dry season is likely to result from a decline of plant activity due to little rainfall. On the daily scale, pCO2-air reached to the minimum around 6 a.m. and maximum around 2-4 p.m., although it is not obvious whether this is due to plant activity or cave ventilation. Also, dynamic pCO2- air reduction was observed following cave ventilation driven by the sudden drop of outside air temperature due to a downburst during severe rain. This suggests that heavy rainfall in short duration is also one factor that controls cave ventilation and pCO2-air.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]We are indebted to Prof. S. Yoden and Prof. K. Takemura (Kyoto Univ., Japan) for generous support to this study. We are very grateful to Mr. T. Mishima (Kyoto Univ., Japan) and Ms. I.Y. Purnamasari (ITB, Indonesia) for their technical support. This study was supported by Program for Next Generation World-Leading Researches (NEXT Program; GR063).[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.4311/2015LSC0118R3[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]